1. He sent a letter to his penpal last week

→ He didn't send a letter to his penpal last week

→ Did he send a letter to his penpal last week ?

2. She taught us English last year

→ She didn't teach us English last year

→ Did she teach us English last year?

3. They did their homework carefully

→ They didn't do their homework carefully 

→ Did they do their homeword carefully?

4. The Robinsons bought a lot of sourvenirs

→ The Robinsons didn't buy a lot of sourvenirs

→Did The Robinsons buy lot of sourvenirs?

5. Tourist ate seafood at that famous restaurant

→ Tourist didn't eat seafood at that famous restaurant

→ Did tourist eat seafood at that famous restaurant ?

6. The teacher gave her students a lot of homeworks

→ The teacher didn't give her students a lot of homeworks

→ Did the teacher give her students a lot of homeworks ?

7. His uncle took him to see Cham temple

→ His uncle didn't take him to see Cham temple

→ Did his uncle take him to see Cham temple ?

8. They put the fish in a big bag

→ They didn't put the fish in a big bag

→ Did they put the fish in a big bag ?

9. Ba wore the cap with a dolphin on it

→ Ba didn't wear the cap with a dolphin on it

→ Did Ba wear the cap with a dolphin on it ?

Chúc bạn học tốt !!