单项选择题

He will be sad when he ______ the bad news.

A．hear
B．is hearing
C．will hear
D．hears
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单项选择题
My parents bought me some books, but ______ was interesting.
A．neither of which
B．none of them
C．none of which
D．either
单项选择题
The servant ______ all day and all night.
A．made to work
B．was made to work
C．was made work
D．was made working
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