答案：C.
1.这是since的固定句型,即：
It is + 一段时间（some time）+ since从句（从句使用一般过去时）；
It was + 一段时间（some time）+ since从句（从句使用过去完成时）.
意思可以翻译成：自从...以来多久了.
2.after从句意来看并没有很大问题,但关键是这种句型是snce的固定用法.
所以从选择最佳答案来看,C为正解.
it was years____i had visited my hometown and was determined to enjoy my stay
it was years____i had visited my hometown and was determined to enjoy my stay
a:after b:that c:since d:when为什么这题不选a,与c有什么区别?
a:after b:that c:since d:when为什么这题不选a,与c有什么区别?
英语人气：456 ℃时间：2020-03-28 03:14:31
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