1)Listen!Somebody (play) the piano
2)I(work) in the garden at 6 oclock yesterday
3)When we came,they (dance)
4)My brother (prepare) for his exams,be quiet
5)He(not to smoke) now
6)At his time tomorrow they(fly) to Spain
7)What you(do),when i called you yesterday?
8)Where are the children?-They(have dinner)
9)Tom gave me an interesting book.I(read)it now
10)She (watch TV)from 4 till 6 tomorrow

1) Listen! Somebody (is playing) the piano.2) I (was working) in the garden at 6 oclock yesterday.3) When we came, they (were dancing).4) My brother (is preparing) for his exams, be quiet.5) He (is not  smoking) now.6) At this time tomorrow they (will be flying) to Spain.7) What were you (doing), when I called you yesterday?8) Where are the children?-They (are having dinner).9) Tom gave me an interesting book.I (am reading) it now.10) She (will be watching TV) from 4 till 6 tomorrow.