题目内容

We’ve______sugar.Ask him to lend us some()

A. run away with
B. run down
C. run off
D. run out of

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Every officer and every soldier_______obey the rules()

A. had to
B. have to
C. has to
D. must have to

One of the requirements for a fire is that the material______to its burning temperature()

A. were heated
B. must be heated
C. is heated
D. be heated

()The noise of desks_______could be heard out in the street

A. opened and closed
B. to be opened and closed
C. being opened and closed
D. having been opened and closed

—I‘ve be en told to pay the rent.—But it‘s already been paid.It______by someone else()

A. must be
B. may be
C. must be paid
D. must have been paid

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