(      )1. It is ____useful book. I borrowed it from ____school library.

A. an; a                B. a; an              C. a; the                         D. an; the

(      )2. –Who's your English teacher?

–Miss Gao. She teaches ____ English very well.

A. our                         B. us                        C. ours                           D. we

(      )3. —Must I finish the work in two days, Mrs. White?  

—______.

A. Yes, you need                                      B. No, you mustn’t

C. No, you needn’t                       D. Certainly not