---Must I hand in my exercise book now, Mr. Zhao?---No, you ______. You may give it to me tomorrow.
#76928
A
mustn’t
B
can’t
C
needn’t
D
don’t
推荐题目
 —Must we finish the project in a month?—No, you _______. 
#74870
A
mustn’t
B
needn’t
C
can’t
D
don’t
Mr. Smith has promised that all of us will pass the exam, so it ____ so difficult as you imagine.
#63382
A
can’t have been
B
can’t be
C
mustn’t have been
D
mustn’t be