【正文】
knew B . have known C . must know D .will know He has _______ been to Shanghai , has he ? A . already B .never C .ever D . still Have you met Mr Li ______? A . just B . ago C .before D . a moment ago The famous writer _____ one new book in the past two year . A . is writing B .was writing C .wrote D .has written — Our country ______ a lot so far . — Yes . I hope it will be even ______ . A . has changed ?,F(xiàn)在完成時(shí)專項(xiàng)練習(xí) 一、 單項(xiàng)選擇。 Both his parents look sad . Maybe they _________what39。 well B . changed 。 better D . changed 。 studying B . will 。 studied D . are 。 do 。 done 。 done 。 do 。t in the office . she_______ to