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____is known to us is that China has won five gold medals in the 2010 Winter Olympic Games.

A．It

B．As

C．What

D．That

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相关试题

When _______a hand, one should say “Thank you” or “It’s very kind of you.”

A．offered

B．to offer

C．to be offered

D．offering

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Some students think it is ___ to spend some time surfing the Internet, but we shouldn’t be too dependent on it.

A．worth

B．worthwhile

C．worthy

D．worthy of

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Not until his mother came back_______.

A．he began to do his homework	B．had he began to do his homework
C．he had begun to do his homework	D．did he begin to do his homework

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—What made Tom so sad? —_______.

A．His bicycle had been stolen	B．His bicycle to be stolen
C．His bicycle’s being stolen	D．His bicycle was stolen

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----Are you happy that your old friend visited you yesterday?
----I would rather he_______. I was so busy then.

A．didn’t

B．hadn’t

C．hasn’t

D．haven’t

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