题目内容

You’ll be late_________you leave immediately.

A. unless
B. until
C. if
D. or

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________,he never seems able to do the work beautifully.

A. Try as he may
B. as he tries
C. Try as does he
D. As he does try

I really wonder__he has posted me many packages_we worked together.

A. how;after
B. why;when
C. when;before
D. why;since

—I wonder how much you charge for your service.—The first two are free________the third costs $30.

A. While
B. Until
C. when
D. before

You may use room as you like _______ you clean it up afterwards

A. so far as
B. so long as
C. in case
D. even if