We must ()that the experiment is controled as rididly as possible. A、ensureB、issueC、assureD、secure
We must ()that the experiment is controled as rididly as possible.
A、ensure
B、issue
C、assure
D、secure
相关考题:
the given name last, so she _____ never call me Miss Ping. She asked if we Chinese had a middle name. A、wouldB、couldC、shouldD、must
9. _______you _______ stay at home today?A. Do ; have toB. Must; have toC. Have; toD. Do ; must
---- Look! The man at the gate ________ be our headmaster. He is always standing there every morning.--- - No, it ________ be him. He is holding a meeting in the office now.A.must, can’t B.must, mustn’t C.can’t, can’t D.can’t, mustn’t
3.—__________ 1 go out for a while?—No,you __________ You must finish your homework first.A. Must,needn'tB. Can,mayC. May,mustn'tD. May,must
31. —Could I have a look at the photo of your family, Sam?—Of course you ________ .A. mayB. canC. couldD. must
It ______ be quite cold in winter eventhough the city is in Hainan Province.A.shall B.shouldC.can D.must