4. Употребите глаголы в скобках в соответствующей грамматической форме: 
1. Не (read) a book when I (see) him.
2. The cat (eat) its supper when the ceiling (fall) down.
3. We (sing) a song when Pedro (come) into the room.
4. While Mr. Priestley (give) a lesson, Sally the cat (jump) on his table.
5. When the phone bell (ring), I (work) in the garden.
6. The rain (begin) to fall while we (watch) the boys playing football.
7. I (see) some beautiful dresses in the shop window when I (come) to the class yesterday
8. Just as I (get) interested in my work, I (have) to go home.
9. Mr. Priestley (write) that book while he (live) in Scotland.
10. As Hob (come) to the class he (buy) some cakes. 

1. He was reading a book when I saw him.2. The cat was eating its suppet when thw celling fell down.3. We was singing a song when Pedro came into the room.4. While Mr. Priestly was getting a lesson, Sally the cat was jumping on his table.5. When the phone bell was ringing, I was working in the garden.6. The rain was begining to fall while we was watching the boys playing football.7. I was seeing some beautiful dresses in the shop window when I came to the class yesterday.8. Just as I have been getting interested in my work, I had to go home.9. Mr. Priestly was writting that book while he lived in Scotland.10. As Hob came to the class he have been buying some cakes.