40%of the health problems skin and weight problems． A．is B．are C．be D．／——青夏教育精英家教网——

题目内容

40％of the health problems skin and weight problems．

A．is B．are C．be D．／

试题答案

1、B

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40％of the health problems skin and weight problems．

A．is B．are C．be D．／

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