isknowntousallthatthe2010World

_______ is known to us all that the 2010 World Expo took place in Shanghai.

A．It

B．As

C．Which

D．What

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— . I’m not using it myself.

A．Come on

B．It depends

C．Go ahead

D．That’s great

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—No. I had the wrong number.

A．got in

B．got away

C．got off

D．got through

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Mary went to the box office at lunch time, but all the tickets ____out.

A．would sell

B．had sold

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A．and

B．so

C．but

D．or

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—Did you return Fred’s call?
—I didn’t need to ____ I’ll see him tomorrow.

A．though

B．unless

C．when

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