题目内容
____twenty years since the old man left home.
A. It is B. It was
C. Those are D. There have been
A
since引起时间状语从句,其主句应用完成时.因为主句谓语为be,故常用一般现在时。
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题目内容
____twenty years since the old man left home.
A. It is B. It was
C. Those are D. There have been
A
since引起时间状语从句,其主句应用完成时.因为主句谓语为be,故常用一般现在时。