1) You could (have given/give) me a call. Why didn’t you do it?
2)I should (have worn/wear) a warm jacket. It’s awfully cold outside.
3) Children should (have helped/help) their parents. I would rather say they must.
4) I needn’t (have bought/buy) so much food. Only few people have come.
5) You shouldn’t (have said/say) such unpleasant things to her. Now she is offended.
6) You shouldn’t (have shouted/shout) at little children. You may frighten them.
7) I needn’t (have explained/explain) anything to them, I am sure they understand it.
8) You should (have come/come) a bit earlier. Now we are late for the bus. ​

Объяснение:

1) I have not received a letter from my friend yet, but I hope to receive it in the evening.

2) It is still raining but I hope it will have stopped by the evening.

3) We were walking all day yesterday and in the evening we got to know that my friend had failed her exam.

4) Where are you going? I will be waiting for you in an hour at the bus stop.

5) Have you found a new job? Yesterday you didn't answer my question on the phone. I am sure you will have found a new job by the end of the week.

Объяснение:

1) I have not received a letter from my friend yet, but I hope to receive it in the evening.

2) It is still raining but I hope it will have stopped by the evening.

3) We were walking all day yesterday and in the evening we got to know that my friend had failed her exam.

4) Where are you going? I will be waiting for you in an hour at the bus stop.

5) Have you found a new job? Yesterday you didn't answer my question on the phone. I am sure you will have found a new job by the end of the week.