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.