1.With whom you (to talk) yestérday? 2. I (to see) this film this week. I like it very much. 3. When I (to enter) the kitchen. I (to see) that my mother (to stand) at the table and (to cut) some cabbage. She (to cook) dinner. 4. They (to go) to the Hermitage last week. 5. They (to be) to the Hermitage twice this week. 6. Yesterday afternoon he (to come) home. (to have) dinner. (to read) an article from the latest magazine and (to begin) doing his homework. 7. When your friend (to return) from the south? -She (to return) vesterday. – You (to go) to the station to meet her? - No. II (to be) too busy. 8. Your brother (to return) from the north? - Yes He (to come) back a few days ago. 9. You (to be) to the Crimea? When you (to be) there?-I (to be) there in 2005. 10. As soon as I (to see) him. I (to understand) that he (to work) hard. He (to write) something and (not to notice) anything. 11. When I (to come) home yesterday, the children (to run) and (to sing) merrily. « We (to learn) a new song!» they cried. 12. When I (to hear) a cry, (to run) out of the room and (to see) that a child (to lie) on the ground and (to cry). «What (to happen)? Why you (to ery)? You (to hurt) yourself?» I asked.​

1. With whom did you talk yesterday?
To answer this question, we need to use the past simple tense. In this tense, we change the verb "to talk" to its past form, which is "talked". We also need to change the pronoun "you" to its past form, which remains the same.

2. I saw this film this week. I like it very much.
In this sentence, we are talking about an action that happened in the past. We use the past simple tense for this. The verb "to see" changes to its past form, which is "saw". The pronoun "I" remains the same.

3. When I entered the kitchen, I saw that my mother was standing at the table and cutting some cabbage. She was cooking dinner.
In this sentence, we are talking about two actions that happened in the past. The first action is entering the kitchen, and the second action is seeing the mother standing at the table and cutting cabbage. Both actions are continuous, happening at the same time. Therefore, we use the past continuous tense for both actions. The verb "to enter" changes to its past form, which is "entered". The verb "to see" also changes to its past form, which is "saw". The verbs "to stand" and "to cut" change to their present participle forms, which are "standing" and "cutting". The verb "to cook" changes to its past continuous form, which is "was cooking".

4. They went to the Hermitage last week.
In this sentence, we are talking about an action that happened in the past. We use the past simple tense for this. The verb "to go" changes to its past form, which is "went". The pronoun "they" remains the same.

5. They have been to the Hermitage twice this week.
In this sentence, we are talking about an action that happened in the past and is still relevant in the present. We use the present perfect tense for this. The verb "to be" changes to its past participle form, which is "been".

6. Yesterday afternoon he came home, had dinner, read an article from the latest magazine, and began doing his homework.
In this sentence, we are talking about a series of actions that happened in the past. We use the past simple tense for each action. The verb "to come" changes to its past form, which is "came". The verbs "to have", "to read", and "to begin" remain the same.

7. When did your friend return from the south? - She returned yesterday. - Did you go to the station to meet her? - No, I was too busy.
In this dialogue, we are talking about an action that happened in the past. We use the past simple tense for this. The verb "to return" changes to its past form, which is "returned". The pronouns "she" and "I" remain the same. The verb "to go" changes to its past form, which is "went". The verb "to be" changes to its past form, which is "was".

8. Did your brother return from the north? - Yes, he came back a few days ago.
In this dialogue, we are talking about an action that happened in the past. We use the past simple tense for this. The verb "to return" changes to its past form, which is "returned". The pronouns "your brother" and "he" remain the same. The verb "to come" changes to its past form, which is "came".

9. Have you been to the Crimea? When were you there? - I was there in 2005.
In this dialogue, we are talking about an action that happened in the past and is still relevant in the present. We use the present perfect tense for this. The verb "to be" changes to its past participle form, which is "been". The pronoun "you" remains the same. The verb "to be" changes to its past form, which is "were".

10. As soon as I saw him, I understood that he had been working hard. He was writing something and not noticing anything.
In this sentence, we are talking about three actions that happened in the past. The first action is seeing him, the second action is understanding that he had been working hard, and the third action is him writing something and not noticing anything. The first and second actions use the past simple tense, while the third action uses the past continuous tense. The verb "to see" changes to its past form, which is "saw". The verb "to understand" changes to its past form, which is "understood". The verb "to work" changes to its past participle form, which is "worked". The verb "to write" changes to its present participle form, which is "writing". The verb "to notice" changes to its present participle form, which is "noticing".

11. When I came home yesterday, the children were running and singing merrily. "We were learning a new song!" they cried.
In this sentence, we are talking about three actions that happened in the past. The first action is coming home, the second action is the children running and singing merrily, and the third action is them crying and saying that they were learning a new song. The first action uses the past simple tense, while the second and third actions use the past continuous tense. The verb "to come" changes to its past form, which is "came". The verbs "to run" and "to sing" change to their present participle forms, which are "running" and "singing". The verb "to learn" changes to its past participle form, which is "learned".

12. When I heard a cry, I ran out of the room and saw that a child was lying on the ground and crying. "What happened? Why are you crying? Did you hurt yourself?" I asked.
In this sentence, we are talking about four actions that happened in the past. The first action is hearing a cry, the second action is running out of the room, the third action is seeing a child lying on the ground and crying, and the fourth action is asking what happened and if the child hurt themselves. The first, second, and third actions use the past simple tense, while the fourth action uses the past simple tense for the first two questions and the past continuous tense for the last question. The verbs "to hear" and "to run" change to their past forms, which are "heard" and "ran". The verb "to see" changes to its past form, which is "saw". The verb "to lie" changes to its present participle form, which is "lying". The verb "to cry" changes to its present participle form, which is "crying". The verbs "to happen" and "to hurt" change to their past forms, which are "happened" and "hurt".