题目内容
The woman at large was observed ________ the supermarket and then she went out of it.
- A.enter
- B.to enter
- C.entered
- D.entering
B
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。
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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