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问题

We_______sixdaysaweek,butweonlyworkfivedaysnow.

A:usedtowork
B:usedwork
C:usedtoworking
D:usetowork
正确答案是:
同类题型

ined ¥!You know you ________KM an hour,don’t you——No officer. I can’t have been.Thiscar doesn’t do .

______ are the pants—Oh, the black pants They are only ten dollars.

Every day ____ a proverb aloud several times until you have it memorized.

Not until the driver was stopped by the traffic police that he shouldn’t have drunk so much wine.

Some researchers believe that there is no doubt _______ a cure for AIDS will be found.

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