Hemusthavegoneout.Iheardthenoise

发布时间：2020-07-25 11:28:55

He must have gone out. I heard the noise of the door ______when I was still in bed.A.being lockedB.to lockC.lockingD.having locked

网友回答

A解析考查非谓语动词和固定用法。句意“他一定是出去了。当我没起床时，我就听见了锁门声。”door和lock之间是被动关系，应该用被动语态。hear sb./sth. doing sth.“听到正在做某事”。故选A。
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