----May I use your car?Mine has just broken  _______.

-----Yes ,here is the key.

—May I use your computer?

  —Sure, _____________

cheer up                    B. come on              C. go ahead            D. nothing

 —May I use your cell phone right now ?

—_______. I am not using it now.

A.Go ahead           B. That’s right         C. That’s the point   D. No, you can’t

—May I use your phone? I left mine at home.
— _____ Here it is.

---May I use your computer, Alex?

   ---Sorry. Mine _____.

   A. has repaired      B. is being repaired   C. has been repaired  D. is repairing