22、---Have you heard the latest news?  ---No, What ________?

A. is it          B. is there            C. are they        D. are those

21、Some pre-school children go to a day care center, __________ they learn simple games and songs.

A. then          B. there              C. while         D. where

20、The manager suggested an earlier date ____________ the meeting.

A. on           B. for              C. about            D. with

19、---It’s a long time since I saw my sister.                   

---_______________ her this weekend?

A. Why not visit                   B. why not to visit

C. Why not visiting                 D. Why don’t visit

18、---The last one ____________ pays the meal.    非谓语动词

---Agreed!

A. arrived       B. arrives         C. to arrive          D. arriving

17、I won’t call you, ________ something unexpected happens.

A. unless       B. whether         C. because         D. while

15、Don’t take too much of the medicine; it does you more harm than good if you    .

A.do     B.take      C.like       D.have

14、Scientists are convinced    the positive effect of laughter   physical and mental health.

A.of; at     B.by; in     C.of; on       D. on , at