You can imagine what great trouble we had the new school.A. setting upB. to set upC. set

问题补充：

You can imagine what great trouble we had the new school.

A. setting up

B. to set up

C. set up

D. to setting up

答案：

(答案→)A. setting up

B. to set up

C. set up

D. to setting up

解析：考查固定词组：句意：你可以想象建立一个新的学校有多难。使用的是have trouble （in） doing这个固定词组，因为是感叹句，所以trouble在前面，we had setting up a new school是定语从句，修饰trouble，选A。