用括号内所给动词的适当形式填空。

1. — Did you notice a boy in blue pass by just now? 

    — No, sir. I _______ (watch) the TV news about Yao Ming.

2. It's thousands of years since the Forbidden City _______ (build).

3. The pen I thought I _______ (lose) is on the desk, right under my nose.

4. Jack told me he ________ (arrive)on time, but he was still late.

5. The factories must ________ (stop) from pouring waste things into the rivers nearby.

6. Mr. Smith writes short stories, but he ________ (write) a TV play these days.

7. The woman is very pleased because her son ________ (sweep) the floor clean.

8. The others all ran off, ________ (leave) me to face the music.

9. Which do you enjoy ________ (spend) your weekend, shopping or fishing?

10. As I have a meeting, ten minutes _______ (be) all that I can spare to talk with you.