They        have arrived at lunchtime, but their flight was delayed.
#87467
A
will
B
can
C
must
D
should
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I was really anxious about you. You _____ __ home without a word. 
#90288
A
mustn’t leave
B
shouldn’t have left
C
couldn’t have left
D
needn’t leave
.---I didn't go to work yesterday because my car broke down. ---You ____ mine. I wasn't using it then.
#89999
A
might borrow
B
could have borrowed
C
must have borrowed
D
ought to borrow
The rule demands that everyone ______ quiet in the school library.
#86874
A
keeps
B
keep
C
will keep
D
should be kept