“You can’t have your football backyou promise not to kick it at the window again!” the old

问题补充：

“You can’t have your football backyou promise not to kick it at the window again!” the old lady said angrily.

A. because

B. since

C. when

D. unless

答案：

A. because

B. since

C. when

(答案→)D. unless

解析：根据汉语意思可知答案为D， 表示除非的意思。