Some visitors are amazed at the fact _________ Australia is the only country in

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Some visitors are amazed at the fact _________ Australia is the only country in the world ______ covers a whole continent.

A．that; that

B．what; which

C．that; whose

D．it; who

答案

举一反三

—How long did Mary work here?
—For half a year, but she didn’t leave us much ____. We hardly remember what she is like.

A．expression

B．explanation

C．impression

D．conclusion

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Service was included in the bill, so you _______ the waiter. It was a waste of money.

A．will not tip

B．may not tip

C．needn"t have tipped

D．mustn"t have tipped

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—Only one of these books is worth _______.
—_______ is no wonder that you look so upset.

A．to read; That

B．of reading; This

C．being read; There

D．reading; It

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I _____ to telephone you last night, but the line was out of order and I couldn’t get through.

A．succeeded

B．tried

C．managed

D．failed

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21.Bob got seriously injured in the traffic accident, but luckily, the doctor came __________to save his life.

A．in time

B．on time

C．at times

D．at last

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