Never form the habit of smoking because it human beings. A. is harmful with B. does harm to ——青夏教育精英家教网——

摘要： Never form the habit of smoking because it human beings. A. is harmful with B. does harm to C. is harm for D. does harmful to [解析]选B.harm是名词或动词.do harm to对--有害,harmful是形容词,be harmful to对--有害.

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Never form the habit of smoking because it ______ human beings.

A. does harm with B. is harmful to C. is harm for D. does harmful to

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Never form the habit of smoking because it ________ human beings．

is harmful with

does harm to

is harm for

does harmful to

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Never form the habit of smoking because it ________ human beings．

does harm with

is harmful to

is harm for

does harmful to

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