7. When you write a composition, would you please leave enough__________for corrections?
A. edge
B. border
C. limit
D. margin
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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
11. If you drive from the airport, get on the motorway and follow the____________to the city.
A. signs
B. points
C. plans
D. ways