13.Although it is commonly believed that an ostrich hides its head when confronted by danger, it actually flees—runs away____. A. swiftly B. forcefully C. hysterically D. comically ...

7.She told the children to ____ while she was talking on the telephone.. A. pipe down B. pipe away C. pipe up D. pipe in ...

1.Why do you look so ____ You never smile or look cheerful. A. miserable B. unfortunate C. sorry D. rude ...

20.What＇s ____ in the bone will come out in the flesh. A. bred B. inserted C. raised D. broken ...

14.His stupid remarks ____ a fight. A. touched down B. touched on C. touched off D. touched up ...

8.The miler＇s younger brother is ___ in many aspects, such as painting, music, sports, literature. A. comical B. full of life C. energetic D. talented ...

2.She simply ____ that the check was good and did not ask him any question about it. A. took it easy B. took it for granted C. took it up with D. took advantage of ...

21.He made such a ____ contribution to the university that they are naming one of the new building after him. A. genuine B. minimum C. modes D. generous ...

15.Because I am her adviser, I think I ____ tell her the news. A. ought to B. will to C. should ought to D. had ought to ...

9.Be ____ ，you cannot expect the child to do all the work on her own. A. logical B. hones C. reasonable D. sincere ...