Question

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

Answer 1

A

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 。