Поставить в нужную форму глагола 1. if i were you i (buy) the book. 2. what (do) he at 3 oclock yesterday. 3. i (listen) already the music. 4. if he had not come yesterday,we (lose).

1. If i were you I'd buy the book.
2. What was he doing at 3 oclock yesterday?
3. I have already listened to the music.
4. If he had not come yesterday, we would have lost.