问题
选择题
—We ______ talk loudly when we see the sign "Be quiet" on the wall.
—Yes, you are right. We should be polite in public.[ ]
A. must
B. mustn't
C. need
D. needn't
答案
B
搜题请搜索小程序“爱下问搜题”
—We ______ talk loudly when we see the sign "Be quiet" on the wall.
—Yes, you are right. We should be polite in public.[ ]
A. must
B. mustn't
C. need
D. needn't
B