1. (-) They weren't in Rio last summer.

(?) Were they in Rio last summer?

2. (-) We didn't do our exercise this morning.

(?) Did you do your exercise this morning?

3. (-) My parents didn't come to visit me last July.

(?) Did your parents come to visit you last July?

4. (-) The hotel wasn't expensive.

(?) Was the hotel expensive?

5. (-) I didn't have a bicycle when I was young.

(?) Did you have a bicycle when you were young?

6. (-) The children didn't go to the zoo yesterday.

(?) Did the children go to the zoo yesterday?

1.They weren't in Rio last summer

    Were they in Rio last summer?

2.We didn't exercise this morning

   Did we exercise this morning?

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

   Did my parent come to visit me last July??

4.The hotel wasn't very expensive 

    Was the hotel very expensive ??

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

   Did i have a bicycle when I was young?

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

   Did the children go to the zoo yesterday?