. It wasn’t long before they found that there was much trouble the plan.A. to carry out B

问题补充：

. It wasn’t long before they found that there was much trouble the plan.

A. to carry out

B. carrying out

C. with carrying out

D. to have carried out

答案：

A. to carry out

(答案→)B. carrying out

C. with carrying out

D. to have carried out

解析：可联系答.案.网客服索取。