问题
选择题
—May I go out now, Dad?
—No. You ___________let your mother know first. [ ]
A. can
B. may
C. need
D. must
答案
答案：D
搜题请搜索小程序“爱下问搜题”
—May I go out now, Dad?
—No. You ___________let your mother know first. [ ]
A. can
B. may
C. need
D. must
答案：D
