单项选择题

He studied hard at school when he was young, ______ contributed to his success in later life.

A．which
B．that
C．what
D．each of which
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单项选择题
The teacher has his students ______ a subject report every month.
A．to write
B．written
C．writing
D．write
单项选择题
Everyone thought how strange ______ Mr. Wang to arrive so early, he was always the last ______ the office.
A．it was for...to get to
B．was for.. getting to
C．it was for...arriving
D．was.. to get to
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