--- Did they attend the opening ceremony? ---They        _, but they were late and quit it.
#86886
A
would
B
would have
C
didn't
D
will have to
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We were delayed at the airport.Otherwise,we    here by lunch.
#86444
A
must have been
B
could be
C
should be
D
would have been
He ________ the window of our classroom yesterday because he didn’t come to school.           
#88280
A
mustn’t have broken
B
mightn’t have broken
C
shouldn’t have broken
D
couldn’t have broken