一、 单项选择。 1 、 Both his parents look sad . Maybe they _________what's happened to him.（呼和浩特） A. knew B. have known C. must know D.will know 2、He has _______ been to Shanghai, has he ? A. already B.never C.ever D. still 3、Have you met Mr Li ______？ A. just B. ago ...

时间:2025-01-23 09:48栏目:行业资料