1.Did he send a letter to his penpal last week?

Yes,he did /No,he didn't.

2.Did she teach us English last year?

Yes ,she did/No,she didn't.

3.Did they do their homework carefully?

Yes,they did/No,they didn't.

4.Did the Robinsons buy a lot of souvenirs?

Yes,they did/No,they didn't.

5.Did tourist eat seafood at the famous restaurant?

Yes, they did/No, they didn't.

6.Did the teacher give her students a lot of homeworks?

Yes,she did/No,she didn't.

7.Did his uncle take him to see Cham temple?

Yes,he did/No,he didn't.

1. Did he send a letter to his pemnpal last week ?
Ye, he did.
2. Did she teach you E last year ?
Yes, she did.
3. Did they do their hw carefully ?
Yes, they did.
4. Did the Robinsons buy a lot of souvernirs ?
No, they didn't 
5. Did tourist eat seafood at the famous restaurant ?
No, they didn't.
6. DId the teacher give her students a lot of hw ?
No, she didn't.
7. Did his uncle take him to see Cham temple ?
No, he didn't.