.进行时练习题（二）现在进行时1、Both his parents look sad . Maybe they _whats happened to him . A. knew B. have known C. must know D.will know2、He has _ been to Shanghai , has he ?A. already B.never C.ever D.still3、Have you met Mr Li _？ A. just B. ago C.before D. a moment ago4、The famous writer _ one new book in the past two year . A. is writing B.was writing C.wrote D.has written5、Our country _ a lot so far .
