10. - Can you show me your headmaster's office?
-_____But I don't know if he is in at the moment.
A. Go ahead B. You're welcome c. Of course not D. Sure
—Hi, Nancy, I you had come back. So have you graduated from college?
—Yes. I_______ French for four years in Nanjing.
| A．don’t know,have studied | B．didn’t know, had studied |
| C．didn’t know,studied | D．don’t know, am studying |
—I’m sorry, I shouldn’t have been so rude to you.
—You________ your temper but that’s OK.
| A．have lost | B．had lost | C．did lose | D．were losing |
—I wonder how long you _____ in Hawaii.
—Just for the weekend, then I had to attend a conference in Los Angeles.
| A．will stay | B．were staying | C．have stayed | D．stayed |
—Miss wang once art at Bardon School for ten years and now is a singer.
—No wonder I often hear her sing in the garden.
| A．had taught | B．taught | C．is teaching | D．has been teaching |
—I’m sure Andrew will come out first in this gymnastic competition.
—I think so. He ______ for it for months.
| A．is preparing | B．was preparing | C．had been preparing | D．has been preparing |