The World Wide Web is sometimes jokingly called the World Wide Wait because it _______ be very slow. 
#63650
A
should
B
must
C
will
D
can
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Something terrible _________ if he didn’t come to the bar as he always did.
#62701
A
should happen
B
might happen
C
must have happened
D
can have happened
 My sister met him at the street yesterday afternoon, so he __________ your lecture.
#63076
A
shouldn’t have attended
B
needn’t have attended
C
mustn’t have attended
D
couldn’t have attended