单项选择题

By cutting down trees we______the natural home of birds and animals.

A. harm
B. hurt
C. injure
D. damage
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单项选择题
Under more favorable conditions, he ______ a great general but he only ended up as captain.
A. could have become
B. became
C. could become
D. had become
单项选择题
On January 1st many people make a New Year ______.
A. intention
B. determination
C. dedication
D. resolution
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