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英语
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It___ten years since he left the army.A.is B.has C.will D.was 这题应该怎么选?
人气：272 ℃ 时间：2019-10-24 03:32:58
解答
正确答案是A,这里也可以填has been.is比较口语化,而填has been比较正式一点,因为句子中有since引导一个过去时的句子,主句应该用现在完成时.两者都是正确的,可以互相转换.该句子可以做如下转换：He left the army ten...
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