He met many problems ______ he was going over his lessons. A

He met many problems ______ he was going over his lessons.
A.before B.as soon as C.since D.while
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baqi123 幼苗

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D

翻译:当他正在复习他的功课时他遇见了很多困难
A在。。。。之前
B一。。。。就
C自从
D当。。。。时
故选D

1年前

3
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