-Can I watch TV now? -No, you ________. You ________ do your homework first. 
#77322
A
can; must
B
can’t; mustn’t
C
can’t; must
D
can; mustn’t
推荐题目
-----You ______ it up during the meeting------I_______ know it was so sensitive an issue. 
#62907
A
might not have brought ;don’t
B
needn’t have brought;don’t
C
shouldn’t have taken,didn’t
D
shouldn’t have brought ,didn’t
---Be polite . You _____ talk to the old like that !  ---Sorry , I won’t .
#75286
A
needn’t
B
wouldn’t
C
mustn’t
D
couldn’t
--- Can you make a kite for me?--- Sorry, I _____.
#75948
A
needn’t
B
can’t
C
mustn’t
D
shouldn’t