1. My brother is very good at p_________ ping-pong.

　　　 2. The clever boy could ________(写) when he was three.

　　　 3. I couldn’t speak Japanese when I was young, and now I s______ can’t speak it.

　　　 4. She can’t r________ a bike now.

　　　 5. He can’t come to the meeting b_______ he was ill.

10. Jim couldn’t ________(write) two years ago.

9. I _________(can not) cook when I was ten.

8. He ______(be) ill in hospital yesterday.

7. Can I have a look at ________(you) watch?

6. I think he can _______(swim).

5. I couldn’t ________(write) when I was seven and I ______(still) can’t now.

4. Kangkang can _____ dance _______ ______(根本…不).

3. My sister often _______ _______ ______(放风筝) in the park.

2. Maria _______ ______ ________(擅长于) performing ballet.