题目内容
选择适当的词语替换句中的画线部分
By the time Dick got to class, his math teacher had already started teaching.
[ ]
A.Before
B.As soon as
C.While
D.When
答案:D
解析:
解析:
点拨:此句的主句为过去完成时, by the time意为“当……的时候”,可用when替代。 |
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