Don't open the window in such bad weather,______ A.must you

C will you
【注】
若陈述部分为祈使句,反意疑问句通常用will you,won’t you,would you等：
Mail the letter today,will you?今天就把信发掉,好吗?
Try to be back by two,won’t you?设法两点之前回来,好吗?
If you want help,let me know,would you?如果你需要帮助,告诉我,好吗?
若陈述部分为否定式,则反意疑问句部分只用will you：
Don’t forget to post the letter,will you?请别忘了寄信.