—Is the flight from Shanghai on time?—Of Course,it is.It       be arriving in 10 minutes at Gate 9.
#89656
A
must
B
should
C
may
D
can
推荐题目
But for their help,we ______ the program in time.
#90428
A
can not finish
B
will not finish
C
had not finished
D
could not have finished
There was a traffic jam; otherwise I ____ here on time.
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A
would be
B
had been 
C
should be
D
would have been
 It is required in our school that lights in students’ rooms ______ off by 11o’clock.
#87254
A
be switched
B
would switch
C
should switch
D
must be switched
The professor ________at 8 o’clock,but he has not shown up yet,which worries all of us.
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A
was supposed to arrive
B
must have arrived
C
might have arrived
D
was supposed arriving