问题
选择题
— May I smoke here, Smith?
— If you _______, choose a seat in the smoking section. [ ]
A. should
B. could
C. must
D. may
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— May I smoke here, Smith?
— If you _______, choose a seat in the smoking section. [ ]
A. should
B. could
C. must
D. may
答案：C