I. 用所给动词的适当形式填空。
1. —_______ you _______(go) to the cinema with me this afternoon?
    —Sorry, I _______(see) it already.
2. I _______ just _______(borrow) a few books from the library.
3. _______ the film _______(begin) yet? No, it _______.
4. He _______ already _______(make)several model planes.
5. _______ you ever _______(use) the Internet? Yes, I often _______(send) e-mails to my friends.
6. What _______(happen) to him just now?
7. _______ your father _______(read) today’s newspaper? No, he isn’t. He _______(read) it already.
8. Please come and join us if you _______(be) free tomorrow.
9. He couldn’t help _______(cry) when he heard the news.
10. —_______ you _______(finish) packing?
      —Yes, I have.

11. In the geography class yesterday, the teacher _______(tell) us the earth _______(go) round the sun.
12. When I _______(come) to see her last night, she _______ (listen) to pop music.