单项选择题

All the investigations ______ before the deadline, the staff decided to have a party as a celebration.

A．been fulfilled
B．had been fulfilled
C．were fulfilled
D．having been fulfilled
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单项选择题
The study says the results are ______ with an earlier research, which showed improved survival of patients with advanced HIV perfection taking the medication.
A．persistent
B．consistent
C．compatible
D．harmonious
单项选择题
Had he kept an eye on the business, his firm ______ the crisis.
A．must have got through
B．would have got through
C．would get through
D．could get through
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