题目内容

Don't have your children ______for hours doing their homework in ______dark a room.

A. sitting, so
B. sit, such
C. to be sitting, so
D. to sit, such

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My sister is used to ______with all the windows open.

A. sleep
B. have slept
C. sleeping
D. slept

______leaves the room last should turn off the lights.

A. Whoever
B. Anyone
C. Who
D. The person

It was quite some time ______the president managed to save his firm from near bankruptcy.

A. until
B. when
C. that
D. before

Everyone can borrow this dictionary ______he keeps it clean; otherwise he will have to pay

A. so that
B. as far as
C. as long as
D. as soon as

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