一Professor Li, ______the student start at once or wait a while?     一At once.
#88085
A
will
B
shall
C
can
D
may
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-Oh, it’s you, Steve! I ______ you.   -No surprising. I’ve just had my hair cut. 
#87982
A
don’t recognize
B
haven’t recognized
C
didn’t recognize
D
hadn’t recognized
We      last night, but we went to the party instead.
#87198
A
must have studied
B
might study
C
should have studied
D
would study
 We        the manager , but no one        the telephone number .
#87851
A
could have called ; knew
B
could have called ; had known
C
could call ; had known
D
could call ; knew