单项选择题

The conference has been held to discuss the effects of tourism ______ the wildlife in the area.

A. in
B. on
C. at
D. with
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单项选择题
It will ______ me five dollars to get the present.
A. keep
B. make
C. take
D. give
单项选择题
With apples so cheap, we couldn't resist ______ four pounds.
A. to take
B. took
C. taking
D. have taken
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