题目内容
On a rainy day I was driving north through Vermont, ______ I noticed a young man holding up a sign _____ “Boston”.
A. where; reading B. when; reading
C. where; to read D. when; to read
A
解析:
考查定语从句的同时考查非谓语动词的用法。where引导的非限定性定语从句修饰Vermont,现在分词reading表示主动,说明sign的内容。
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