He did not regret saying what he did but felt that he _________ it differently. 
#87719
A
could express
B
would express
C
could have expressed
D
must have expressed
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Had Tom studied harder, he ________ the exam.
#86607
A
must have got through
B
would have got through
C
would get through
D
could get through
—Why didn't you answer my phone when I phoned you at about 11 p. m. yesterday? —I ___________and failed to hear the phone.
#89324
A
might have slept
B
must be sleeping
C
might be sleeping
D
must have been sleeping