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【单选题】
煞费苦心做某事
A.
have a pain in the back
B.
No pains, no gains.
C.
take pains to do
D.
spare no pains to do
题目标签：煞费苦心
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】煞费苦心做某事
A.
have a pain in the back
B.
No pains, no gains.
C.
take pains to do
D.
spare no pains to do