1. UNICEF is part of the United Nations . It wants to make a better place for _____.
A. animals B .plants C. children D. adults
2--- What did you do with your car ?
--- I ‘ve lost my key , so I have to ___ it in the park .
A. lock B. repair C. leave D. pass
3--- I came to your office yesterday morning , but nobody was in .
--- Oh , we ___ａmeeting in the meeting room .
A. have had B. had C. were having D. are having
4.This is ___ useful book that we all need to read it .
A. such an B. such a C. so D. so a
