单项选择题

Farmers are allowed to grow small gardens of their own and they sell their vegetables（）the black market.

A. on
B. at
C. in
D. for

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单项选择题
Jack is so（） to his appearance that he never has his clothes pressed.

A. adverse
B. anonymous
C. indifferent
D. casual
单项选择题
Operations which left patients （）and in need of long periods of discovery time now leave them feeling relaxed and comfortable.

A. exhausted
B. unhealthy
C. upset
D. fearful
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