Since last year, she _________of the long distance.

A．[ A ] have covered three fifth

B．[ B ] have covered three fifths

C．[ C ] has covered three fifths

D．[ D ] has covered three fifth

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参考答案

本题考查分数的用法和主谓一致。本句是现在完成时，因主语是第三人称单数，故用has；分数由基数词作分子，序数词作分母构成，分子若大于1，分母用复数形式。

1 There was a second knock at the door. It was the second time I _______that afternoon.

A．[ A ] was interrupted

B．[ B ] was interrupting

C．[ C ] had interrupted

D．[ D ] had been interrupted

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2 I didn't feel like _____so he suggested _______a taxi.

A．[ A ] to walk; taking

B．[ B ] walking; taking　=^_^= (^_^)

C．[ C ] to walk; to take

D．[ D ] walking; to take

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3 Mr. Grey has two sons, _________are famous dancers.

A．[ A ] both they

B．[ B ] both of them

C．[ C ] they both

D．[ D ] both of whom

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