An Englishman who ____not speak Chinese is going to live in China.
查看答案
It ____ be hot in the summer.
A. can
B. couldn’t
C. can’t
–Who is the man over there? Is it Mr. Li?
A. No, it ______ be him. Mr. Li is much taller.
B. mustn’t
C. could not
D. can’t
--- Could I sit here?
A. -Yes, of course you _______.
B. can
C. could
D. must
It is lucky for him to _____ get the job.
A. be able to
B. could
C. can