【題目】It’s not very safe ______ on the Internet.

A. to shop B. shop C. shopping D. shops

【答案】A

【解析】

試題分析：句意：網(wǎng)上購物不安全。這是一個(gè)不定式作主語的句子，用it作形式主語放在句首，將真正的主語用帶to的不定式放在后面，即：It’s + adj. + to do sth.（做某事……）后面用帶to的不定式，故選A。

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