单项选择5道，容易！！

CBBDA
1 催促，他正等一个电话，让她先走，故用现在进行时
2 ask sb （not）to do sth
3 叫某人去做，故用to do
4 have fun doing
5 to one's surprise 令某人吃惊的是，用名词

( C ) 16.—Hurry up! We’re all waiting for you.

---I ____ for an important phone call. Go with out me.

A. wait B. was waiting C. am waiting D. waited

( B ) 17. Aunt Li often asks her son ______ too much meat.

A. don’t eat B. not to eat C. not eat D. to not eat

( B ) 18. Remember _____ your sister to come here on time.

A. ask B. to ask C. asks D. asking

( D ) 19.They had fun _____ to the music.

A. listen B. to listen C. listens D. listening

( A ) 20.To my _____, he passed the exam.

A. surprise B. surprised C. surprising D. be surprised

CBBDA
17:ask sb (not) to do sth
18:remember to do sth---记得要做某事（还没做）
remember doing sth---想起做过的某事。
19：have fun to do sth---乐于作某事（将来）
have fun do