问题
选择题
— Must we keep the windows ______ all the time?
— No, you ______.[ ]
A. closed; mustn't
B. close; mustn't
C. closed; needn't
D. close; needn't
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— Must we keep the windows ______ all the time?
— No, you ______.[ ]
A. closed; mustn't
B. close; mustn't
C. closed; needn't
D. close; needn't
答案：C