---What’s wrong with your cell phone? I can’t get through.Oh my line was cut off beca

问题补充：

---What’s wrong with your cell phone? I can’t get through.

--- Oh, my line was cut off because I my bill.

A. haven’t paid

B. hadn’t paid

C. wasn’t paying

D. don’t pay

答案：

A. haven’t paid

(答案→)B. hadn’t paid

C. wasn’t paying

D. don’t pay

解析：本题考查时态。根据“我的线路被切断了”是过去发生的事情，而应为我没有付我的账单是在“我的线路被切断了”之前，故用过去完成时。选B。