用所给动词的适当形式填空。 1. The fashionable dress __________ (design) by Cheng Yifei last year. 2. Would you mind __________ (click) the icon at once? 3. You need __________ (finish) your homework today. 4. I _________ (know) the boy since 1993. 5. —I want to return the book to Jack, but I can't find him. —He __________ (go) to the library. You can find him there. 6. —What do you think of the new book by Han Han? —Wonderful! I __________ (not read) such a good book before.