问题
选择题
—Can I go to the park, Mum?
—Certainly. But you ______ be back by six o'clock. [ ]
A. can
B. may
C. might
D. must
答案
答案：D
搜题请搜索小程序“爱下问搜题”
—Can I go to the park, Mum?
—Certainly. But you ______ be back by six o'clock. [ ]
A. can
B. may
C. might
D. must
答案：D