He paid for a seat, when he _________ have entered free.  
#89251
A
could
B
would
C
must
D
need
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-You must call them every week. -Yes, I _____.
#89148
A
must
B
should
C
have to
D
will
—Why aren’t they here yet?—They           the bus.
#88998
A
can have missed
B
must be late for
C
may have missed
D
might be late for
_____ your advice, I would have had no trouble with my papers.
#90229
A
Had I followed
B
If I followed
C
If I have followed
D
Once I followed