These young trees must ______.

A. look after well          B. be look after well 

C. be looked well         D. be looked after well

 

【答案】

D

【解析】

試題分析:句意:這些樹必須被很好的照顧。look after照顧。主語(yǔ)trees與動(dòng)詞look after之間是被動(dòng)關(guān)系。因此用被動(dòng)形式be looked after。故選D。

考點(diǎn):考查語(yǔ)態(tài)的用法。

 

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