【題目】The machine has been made easier for it __________.

A. to operate B. operated

C. being operated D. to be operated

【答案】D

【解析】句意：這臺(tái)機(jī)器已經(jīng)被弄得更容易操縱了。分析句子可知“形容詞+動(dòng)詞不定式”作主語(yǔ)補(bǔ)足語(yǔ)，動(dòng)詞不定式中動(dòng)詞operate與it有被動(dòng)關(guān)系，故用動(dòng)詞不定式的被動(dòng)式:to be +過(guò)去分詞，故D項(xiàng)正確。

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