1. They were in Rio last summer
(-) They weren't in Rio last summer
(?) Where were they last summer?
2. We did our exercise this morning
(-) We didn't our exercise this morning
(?) What did we do this morning?
3. My parents came to visit me last July
(-) My parents didn't come to visit me last July
(?) When did they come to visit me?
4. The hotel was very expensive
(-) The hotel wasn't very expensive
(?) What was the hotel?
5. I had a bycle when I was young
(-) I hadn't a bycle when I was young
(?) When did I get a bicycle?
6. The children went to the zoo yesterday
(-) The children didn't go to the zoo yesterday
(?) When did the children go to the zoo?
chúc bn học tốt
