1. N: They weren't in Rio last summer.

    I: Were they in Rio last summer?

2. N: We didn't do our exercise this morning.

    I: Did you do your exercise this morning?

3. N: My parents didn't come to visit me last July.

    I: Did your parents come to visit you last July?

4. N: The hotel wasn't very expensive.

    I: Was the hotel very expensive?

5. N: I didn't have a bicycle when I was young

    I: Did you have a bicycle when you were young?

6. N: The children didn't go to the zoo yesterday.

    I: Did the children go to the zoo yesterday?