26. I wondered what difficulty he had the plan?A. to carry outB. carrying outC. carried o

问题补充：

26. I wondered what difficulty he had the plan?

A. to carry out

B. carrying out

C. carried out

D. with carrying out

答案：

A. to carry out

(答案→)B. carrying out

C. carried out

D. with carrying out

解析：可联系答.案.网客服索取。