I don’t think you can work out the maths problem＿＿＿＿her help. A. sinceB. unlessC. withD. w

问题补充：

I don’t think you can work out the maths problem＿＿＿＿her help.

A. since

B. unless

C. with

D. without

答案：

A. since

B. unless

C. with

(答案→)D. without

解析： “在……帮助下”用with,“没有……帮助”用without。