问题补充:
—Mom, I play computer games?
—Yes, you can. But you have to finish your homework first.
A. must
B. may
C. will
D. need
答案:
A. must
(答案→)B. may
C. will
D. need
解析:句意:妈妈,我可以玩电脑游戏吗?可以。但你必须先完成你的家庭作业。Must必须;may可以;will将;need需要。征求对方许可常用May开头的疑问句,所以选B。