--Can I play computer now?No you . You do your homework first.A. can; canB. can’t; mus

问题补充：

--Can I play computer now? --No, you . You do your homework first.

A. can; can

B. can’t; must

C. can’t; can

D. must; can

答案：

A. can; can

(答案→)B. can’t; must

C. can’t; can

D. must; can

解析：情态动词can 引导的一般疑问句的否定回答为no，···can’t，又根据意思，可知答案为B