Решение:
- Where were you yesterday? — I was at home the whole day. — How strange. I rang you up at two o'clock, but nobody answered. — Oh, I was in the garden. I was reading your book and did not hear the telephone.
- What were you doing at five o'clock yesterday? — I was working in the library. — I was there, too, but I did not see you.
- Nina celebrated her birthday yesterday. Her room looked beautiful, there were many flowers in it. When I came in, somebody was playing the piano, two or three pairs were dancing.
- Listen! Somebody is playing the piano.
- I like music very much.
- When I looked out of the window, it was raining heavily and people were hurrying along the streets.
- What were you doing at seven o'clock yesterday? — I was having supper.
- When I came home yesterday, I saw that all my family were sitting round the table.
Ответ: глаголы раскрыты согласно правилам времён Present Simple, Past Simple, Present Continuous, Past Continuous.