问题
选择题
I wondered what great difficulty he had ________ the plan.
A．to carry out
B．carrying out
C．carried out
D．with carrying out
答案
B
题目分析：句意：我想知道他实施这个计划有多难。这句话用了have difficulty（ in）doing这个词组，意思是“做…很困难”，这里因为是感叹句所以把what great difficulty放在了前面，选B。