Ex.1 Поставьте глаголы в правильную форму
1 I (to talk) to my friend when the doorbell rang.
2 I (to read) while my sister was doing the flat
3 Jeff (to read) a magazine when the TV show started
4 She (to dance) while they (to learn) English.
5 The children (to enjoy) the game when it (to
become) dark.
6 My friend (to ride) his bike while I (to walk) in the
park.
7 We (to have) lunch when the telephone (to ring).