单项选择题

Jack would have been a top student in his school at the time, but he ______ hard enough.

A．hadn't worked
B．should work
C．didn't work
D．won't work
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单项选择题
His little finger has become swollen due to the snakebite. He can feel it ______ with pain.
A．throbbing
B．striking
C．bumping
D．echoing
单项选择题
It was reported that the project ______ by the end of this month.
A．will be completed
B．will have been completed
C．would have completed
D．would have been completed
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