Раскройте скобки, употребляя глаголы в форме past simple или past continuous. 1. why you (to be) angry with me yesterday? – i (not to be). 2. where you (to be) last night? – we (to be) at the theatre. 3. when i (to come) to the bus stop, i (to see) a boy who (to play) with a dog. 4. it (to be) eleven o'clock, when i (to decide) to go to bed. 5. what time they (to have) dinner yesterday? – they (to have) dinner from seven till eight. 6. when she (to see) him a year ago she (not to recognize) him. 7. i (to be) very busy yesterday. i (to prepare) for my exam the whole day. 8. my brother (to wash) the dishes while i (to sweep) the floor. 9. why you (not to see) a doctor yesterday? 10. it (to rain) heavily when he (to go) out.

1 were, wasn't 
2 were, were
3 came, saw, was playing 
4 was, decided 
5 did you have, were having
6 saw, didn't recognize 
7 was, was preparing 
8 was washing, was sweeping
9 didn't see
10 was raining , went

1. Why were you angry with me yesterday? – I wasn't.
To form the past continuous tense, we use the past tense of the verb "to be" (was/were) and add the present participle form of the main verb (-ing). In this case, the question is asking about a specific time in the past (yesterday) and the action or state of being angry. So, we use the past continuous tense "were" for the question and "wasn't" for the negative answer.

2. Where were you last night? – We were at the theatre.
Again, we use the past tense of the verb "to be" (was/were) to form the past continuous tense. In this case, the question is asking about the location of someone (you) at a specific time in the past (last night). The answer states that the person was at the theatre.

3. When I came to the bus stop, I saw a boy who was playing with a dog.
When we are talking about two past actions that occurred simultaneously, we use the past continuous tense for the longer action and the past simple tense for the shorter action. In this case, the longer action is "playing with a dog," so we use the past continuous tense "was playing." The shorter action is "coming to the bus stop" and we use the past simple tense "came" for that action.

4. It was eleven o'clock when I decided to go to bed.
In this sentence, we are talking about a specific time in the past (eleven o'clock) and a decision to go to bed. The decision to go to bed is a single action that happened at that specific time, so we use the past simple tense "decided."

5. What time did they have dinner yesterday? – They had dinner from seven till eight.
Here, the question is asking about the time of an action in the past (dinner). The answer gives a specific time frame from seven until eight, so we use the past simple tense "had" for both the question and the answer.

6. When she saw him a year ago, she didn't recognize him.
Similar to example 3, we have two past actions happening simultaneously: "seeing him" and "not recognizing him." The longer action is "seeing him," so we use the past continuous tense "saw." The shorter action is "not recognizing him," so we use the past simple tense "didn't recognize."

7. I was very busy yesterday. I was preparing for my exam the whole day.
Both sentences talk about actions or states of being that were ongoing in the past (yesterday). We use the past continuous tense "was" to describe the ongoing action of preparing for the exam.

8. My brother was washing the dishes while I was sweeping the floor.
Here, we have two actions happening simultaneously: "washing the dishes" and "sweeping the floor." To describe these two actions, we use the past continuous tense "was" for both actions.

9. Why didn't you see a doctor yesterday?
The question is asking about the absence of an action (not seeing a doctor) in the past (yesterday). We use the past simple tense "did" and the base form of the verb "see" to form the negative question and answer.

10. It was raining heavily when he went out.
In this sentence, we are talking about the weather and a specific action (going out) in the past. The action of raining happened before the action of going out, so we use the past continuous tense "was raining" for the ongoing action and the past simple tense "went" for the action of going out.