отмечу как лучший ответ )​

Объяснение:

1 He was watching TV when she called.

2 She was listening to my iPod, so She didn't hear the fire alarm.

3 Yesterday at this time, I was sitting at my desk at work.

4 I was studying while He was making dinner.

5 When the phone rang, She was writing a letter.

6 He was drinking coffee when I arrived.

7 You were studying chemistry all day yesterday.

8 John was reading an English book while Mary was watching TV.