поставьте предложение в вопросительную форму (общий вопрос)
1. They were at the theatle yesterday
2. Tom plays chess very well
3. He will be waiting for me at 5 o'clock tomorrow.
4. My mother is cooking diner now. ​

Ответ:

1 Were they at the theatre yesterday?

2 Does Tom play chess very well ?

3 Will he be waiting for me at 5 o'clock tomorrow ?

4 Is my mother cooking dinNer now?