题目内容

Small mounds of snow and ice ________ the sidewalks.

A. piled
B. coated
C. filled
D. dressed

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Canada has many ________ from Europe.

A. immigrants
B. immigration
C. emmigrants
D. emmigration

Why __________do you tell a lie?

A. at all
B. on earth
C. nevertheless
D. furthermore

Clouds are forming __________the hill.

A. at the bottom of
B. under
C. on top of
D. beside

He will ____________unless he gets more sleep.

A. get through
B. come over
C. tire out
D. burn out

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