Thewomanatlargewasobserved____

发布时间：2020-07-28 17:21:46

The woman at large was observed ________ the supermarket and then she went out of it．A.enterB.to enterC.enteredD.entering

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B解析observe在题中用的是被动态，动词宾语为完成的动作时，动词用不定式。
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