1. Did you read books about space exploration when you were a boy?

2. My grandparents weren't watching TV when aunt Helen visited them.

3. Last week I bought a new mobile phone.

4. Was John sleeping at 7 o'clock yesterday?

5. Professor Thatcher was working at university when he had a brilliant idea

Ответ:

1. Did you read

2.wasnt watching

3 bought

4.Was John sleeping

5. was working

Объяснение: