问题
选择题
—Must we keep the window open all the time?
—_____.[ ]
A. No, you mustn't
B. No, you can't.
C. No, you don't have to.
答案
答案:C
—Must we keep the window open all the time?
—_____.[ ]
A. No, you mustn't
B. No, you can't.
C. No, you don't have to.
答案:C