拜求各路好汉，一高二英语选择题！！！
Mr.zhang is not here yet. I think he( )about the meeting. A.must have forgotten B.may forget 解释越详尽越好！！！多谢！！！
个人觉得应该是a. 前一句不是出现了一个yet吗?以此可以判断出来用have done句型! 仅供参考哦~~~如果错了,请原谅~呵呵~
答：-Tom,you are absent-minded! -Oh,I am sorry I( )attention to you ,Miss He. A.have...详情>>
答：I haven't window molding catalogs on hand. catalogs 产品目录 haven't ~ something ~ o...详情>>
问：working hard vs. hard working
答：there are no defferent.详情>>
