题目内容

______________your composition carefully, some spelling mistakes can be avoided.

A. Having checked
B. Checked
C. If you check
D. To check

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7. When you write a composition, would you please leave enough__________for corrections?

A. edge
B. border
C. limit
D. margin

8. Eat less food_____________you want to become fatter.

A. if
B. until
C. unless
D. as soon as

9. Facing the fire,he remained cold-headed____________nothing had happened.

A. just
B. as if
C. as
D. such as

The clever boy made a hole on the wall______________he could see what was happeninginside the house.

A. in which
B. through which
C. at which
D. on which

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