16.-________ you ________ (return) the library book yet?

　 -Oh, I’m sorry. I ______ (forget) it. I _______ (return) it tomorrow.

15.She ______ never ______ (get) up late, but this morning she _____ (get) up late.

14.We ________ already _______ (read ) the book.

13.He ______ just _____ (finish) his work.

12.-Have you ever ______ (be ) to America ?　 -Yes, I have.

11.Where’s your father? He ______ (go) to the library.

10.有趣的短信

9.真实的原因

8.一个身份的象征

7.最新的型号