【題目】It's a pity that some students waste energy _________ on line.

A.to chatB.chattingC.chatD.to chatting

【答案】B

【解析】

句意:很遺憾有些學(xué)生浪費(fèi)精力在網(wǎng)上聊天。

考查非謂語(yǔ)。to chat聊天,動(dòng)詞不定式;chatting聊天,現(xiàn)在分詞或者動(dòng)名詞形式;chat聊天,動(dòng)詞原形;to chatting聊天,介詞+動(dòng)名詞形式;根據(jù)句子結(jié)構(gòu)分析可知,這里表達(dá)的是“浪費(fèi)精力做某事”,英語(yǔ)是waste energy in doing sth,所以這里應(yīng)該用doing形式,故選B。

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