单项选择题

The examination has been cancelled. You _____ all that revision, after all.

A．didn't need to have done
B．needn't have done
C．need to do
D．needn't do
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单项选择题
The flower needs _____ . Would you like me to do it for you
A．watering
B．to water
C．water
D．to be watering
单项选择题
They _____ so tired if they _____ for a whole day.
A．wouldn't feel, didn't walk
B．wouldn't feel, weren't walking
C．wouldn't be feeling, weren't walking
D．wouldn't be feeling, hadn't been walking
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