单项选择题

We wish the work could ______ more quickly, but we'd had some difficulties in getting the right kind of supplies.

A．have done
B．have been done
C．have been doing
D．be done
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单项选择题
She ______ meet her former instructor on the bus.
A．delighted to
B．happened to
C．pleased to
D．tended to
单项选择题
Your advice that he ______ a dentist is unreasonable.
A．must become
B．becomes
C．become
D．became
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