How about my food?I___here for almost half an hour.A.have been sitting B.am sitting

分类: 作业答案 • 2023-01-12 20:19:43

问题描述：

How about my food?I___here for almost half an hour.A.have been sitting B.am sitting
C.had been sitting D.was sitting

答

选择A 首先for加一段时间要用完成时,排除BD,过去完成时必须要有一个过去的时间为基准,过去的过去才可用过去完成时,这里没有过去时间,排除C~