Раскройте скобки, употребляя глаголы в одном из последующих времен: Present Simple, Past

Раскройте скобки, употребляя глаголы в одном из следующих времен: Present Simple, Past Simple, Present Continuous, Past Continuous.
1. Nina (to celebrate) her birthday yesterday. Her room looked beautiful, there (to be) many flowers in it. When I (to come) in, somebody (to play) the piano, two or three pairs (to dance).
2. Listen! Somebody (to play) the piano.
3. I (to like) music very much.
4. When I (to look) out of the window, it (to rain) heavily and people (to hurry) along the streets.
5. What you (to do) at seven o'clock yesterday? - I (to have) supper.
6. When I (to come) home yesterday, I (to see) that all my family (to sit) round the table. Father (to read) a letter from my uncle who (to live) in Kiev.
7. Where you (to be) yesterday? I (to be) at home the whole day. How strange. I (to ring) you up at two o'clock, but nobody (to answer). Oh, I (to be) in the garden. I (to read) your book and (not to hear) the telephone.
8. What you (to do) at five o'clock yesterday? I (to work) in the library. I (to be) there, too, but I (not to see) you.
9. Yesterday I (to work) at my English from five till seven.
10. It (to rain) the whole day yesterday.
11. Where your sister (to be) now? She (to be) in her room. She (to do) her homework.