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Поставьте глаголы в нужную временную форму, соблюдая правило согласования времен.

1. We knew that he not (to be able) to set the tables in time and (to decide) to help him.

2. He did it better than we (to expect).

3. He said that the guests (to be) here soon.

4. He told us that he (to do) this work himself.

5. They said they (to bring) us all the vegetables we need tomorrow.

6. He said that he (can) not do it without my help.

7. I decided that next year I (to go) to the Black Sea coast.

8. We understood at once that this work (to be) a difficult one.

9. I told them that I (not/to come) next day.

10. They did not know that he already (to serve) the guests.

11. We wanted to know when he (to serve) us.

12.1 did not know that you already (to finish) this work

13. He said he (to know) several foreign languages.

1. We knew that he was not able to set the tables in time and decided to help him.
Explanation: The verb "knew" is in the past tense, so we need to use the past tense form of the verb "be" which is "was". The verb "to be able" remains in the base form because it is followed by the infinitive "to set". The verb "decide" also remains in the base form because it is not affected by the past tense of "knew".

2. He did it better than we expected.
Explanation: The verb "did" is in the past tense, so we use the base form of the verb "expect". The word "than" indicates a comparison, so we use the base form after it.

3. He said that the guests would be here soon.
Explanation: The verb "said" is in the past tense, so we need to use the past tense form of the verb "be" which is "would be".

4. He told us that he would do this work himself.
Explanation: The verb "told" is in the past tense, so we need to use the past tense form of the verb "do" which is "would do".

5. They said they would bring us all the vegetables we need tomorrow.
Explanation: The verb "said" is in the past tense, so we need to use the past tense form of the verb "will" which is "would". The verb "bring" remains in the base form because it is followed by the object pronoun "us".

6. He said that he could not do it without my help.
Explanation: The verb "said" is in the past tense. The verb "can" changes to "could" in the past tense to express ability or possibility.

7. I decided that next year I will go to the Black Sea coast.
Explanation: The verb "decided" is in the past tense, so we use the base form of the verb "go" because it is referring to a future action.

8. We understood at once that this work was a difficult one.
Explanation: The verb "understood" is in the past tense, so we need to use the past tense form of the verb "be" which is "was".

9. I told them that I would not come next day.
Explanation: The verb "told" is in the past tense, so we need to use the past tense form of the verb "come" which is "would come".

10. They did not know that he had already served the guests.
Explanation: The verb "did" is in the past tense, so we use the past participle form of the verb "serve" which is "served". Also, the past perfect tense is used because the action of serving the guests had already been completed before "they did not know".

11. We wanted to know when he would serve us.
Explanation: The verb "wanted" is in the past tense, so we use the base form of the verb "serve" because it is referring to a future action.

12. I did not know that you had already finished this work.
Explanation: The verb "did" is in the past tense, so we use the past participle form of the verb "finish" which is "finished". Also, the past perfect tense is used because the action of finishing the work had already been completed before "I did not know".

13. He said he knew several foreign languages.
Explanation: The verb "said" is in the past tense, so we use the base form of the verb "know" because it is a state verb and does not undergo tense changes.