You _____keep the water running all the time, because you’re wasting water.
A. ought to B. ought not
C. not ought D. ought not to
---Excuse me, could you wake me up if my friend __________ here?
---Of course. But we still don’t know when your friend ___________.
A. comes; will come B. comes; comes
C. will come; comes D. will come; will come
Gina used to be ________ and she never spoke in front of the public.
A. outgoing B. noisy
C. silent D. humorous
He watched TV for an hour. At 8 o’clock he stopped _______ his homework.
A. do B. doing
C. to do D. did
–Jim is reading a book under that tree.
–It be Jim. He has gone to Hainan.
A. may B. mustn’t
C. can’t D. couldn’t
As a doctor, you can’t be ________ careful．
A．to B．too
C．also D．very
