【題目】 —I’m leaving now.

—__________ you turn off the lights and the computer.

A. To make sure B. Make sure C. Made sure D. Making sure

【答案】B

【解析】考查祈使句的用法。句意：確保你關(guān)了燈和電腦。這是一個(gè)祈使句，空后面的內(nèi)容是Make sure的賓語從句；祈使句省略主語you，以動(dòng)詞原形開頭。

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