宋喆是怎么日上马蓉的:I have been working here ____ years.

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A.of B.since C.for D.as
应该选哪个呀？
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c

I have been working here ____ years. I would have been drowned . I HAVE Never Been To Me I have been to shanghai 什么时态 请问一下I have been to shanghai 请问一下I have been to shanghai I have been to England什么意思 i have been waiting for you but I loved what working allowed me to have I have been to shanghai 为什么have不用过去时