英语单选题
I haven't seen Mary these past few days. I'm afraid she ____herself for some time. A.hasn't been feeling B.hadn't been feeling C.isn't feeling D.wasn't feeling 答案A,why?
如果后面有for sometime，前面就要用完成式。所以c与d都不对。 因为讲话的人是说他现在还没看到Mary，所以这事是现在还在发生中，因此不能用过去完成式，淘汰b。 所以选A. hasn't been feeling
答：1.where have you been r 3.enjoyable 4.during corate 6.about rthday of 9.enjoy e ...详情>>
答：B 被动语态，be found to do. A中的made与found均为过去分词，冲突！详情>>
问：hArd work 和hArd--working有什么区别
答：一个是名词 一个是形容词撒详情>>
