用所给词的适当形式填空（每空一词）。
1. Dashan _______ (speak) Chinese quite well.
2. Mr King _______ (teach) us English last term.
3. It _______ _______ (rain) outside.Please take this raincoat(雨衣) with you.
4. _______ you ever _______ (be) to London?
5. The homework must _______ _______ (do) by yourself.
6. I don't know the correct _______ (pronounce) of the word.
7. The growing population is one of the biggest _______ (challenge) of the
world today.
8. I think _______ (speak) English is more difficult than written English.
9. Don't be afraid of _______ (make) mistakes when you speak English.
10. _______ (use) such a _______ (fashion) mobile phone can make us look
good in front of others.
