It_____ have been Tom that parked the car here, as he is the only one with a car. 
#90416
A
may
B
can
C
must
D
should
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 It was playing computer games that cost the boy plenty of time he ____ doing his lessons.
#89110
A
might have spent
B
ought to have spent
C
must have spent
D
could have spent
 The airplane _____late, for we didn’t see the famous pop singer until 10 pm.
#88058
A
must be
B
will be
C
would have been
D
must have been
He said he didn’t regret telling the truth but felt that he ______ it differently. 
#87843
A
could have expressed
B
could express
C
must have expressed
D
would express