() finish his homework, he would have come to class.
A. If Mike could
B. Were Mike able to
C. Would Mike be able to
D. If Mike had been able to
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My wallet is nowhere to be found. I () it when I was on the bus.
A. must drop
B. had dropped
C. must have dropped
D. should have dropped
A new technique () worked out, we set about our project.
A. being
B. to be
C. having
D. having been
He didn’t seem to mind () TV while he was trying to study.
A. them to watch
B. that they watch
C. their watching
D. them watch
If only he () what I tell him, but he won’t.
A. had done
B. would have done
C. would do
D. has done