—The light___________on for long.
—Oh, I am sorry , I will go and turn it off.
A．has been leftB．has leftC．had been leftD．had left
A

試題分析：考查時態(tài)，句意：--等開著很長時間了。--抱歉，我馬上去，把它關(guān)了。說明等從過去到現(xiàn)在一直開著，和一段時間連用，用現(xiàn)在完成時，因?yàn)閠he light和leave是被動關(guān)系，用現(xiàn)在完成時的被動。選A。
點(diǎn)評：時態(tài)的考查要根據(jù)上下文的語境進(jìn)行，要根據(jù)句子中的關(guān)鍵詞來考查句子的時態(tài)。這題的關(guān)鍵詞是后面的for long，另外考慮時態(tài)要注意語態(tài)問題。
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