1. Yesterday we played chess.

Did we play chess yesterday?

We didn’t play chess yesterday.

2. I phoned you last month.

Did I phone you last month?

I didn’t phone you last month.

3. Tom walked his dog in the evening.

Did Tom walk his dog in the evening?

Tom didn’t walk his dog in the evening.

4. We travelled a lot last year.

Did we travel a lot last year?

We didn’t travel a lot last year.

5. The teacher opened the window.

Did the teacher open the window?

The teacher didn’t open the window.