1.重庆A卷 ---Must we finish the work today?

   ---________. We have something else to do tomorrow.

   A. Yes, we can               B. No, we can’t     

   C. Yes, we must             D. No, we needn’t 

2.山东青岛The girl in the classroom ______ be Sarah. She has gone to the library.

     A. may                        B. must                      C. can’t                     D. needn’t

3.四川自贡 ---Whose book is this ?

          ----I am not sure. It _____ be Mary’s.

   A. shall             B. must             C. might

4.山东泰安 Rock music ______ sound popular with the young , but it’s not the favor of the aged people.

   A. must             B. need             C. should            D. may

5.四川成都 -----Is that man Mr. Zhang?

          ------It ______ be him. He went to Beijing for a meeting yesterday.

A.can’t             B,mustn’t           C.needn’t