I can’t thank you much because without your help I have won the first prize.A. too; woul

问题补充：

I can’t thank you much because without your help I have won the first prize.

A. too; wouldn’t

B. very; shouldn’t

C. that; might not

D. so; couldn’t

答案：

(答案→)A. too; wouldn’t

B. very; shouldn’t

C. that; might not

D. so; couldn’t

解析：too much 可以做副词意为非常；后半句是一个含有含蓄条件句的虚拟语气，表过去，主句应用：would have done 结构。所以选A 。