【題目】Please ______ that all lights are turned off.
A.enclose
B.enlarge
C.ensure
D.enable

【答案】C
【解析】句意：請確保所有的燈被關(guān)閉。A. enclose “ 圍住,把,附上”； B. enlarge “擴大”；C. ensure “ 確�！�； D. enable “使能夠”。根據(jù)句意思可以推斷出答案，故選C。

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