You can imagine what great tuouble we had the school for the blind.A. setting upB. to set

问题补充：

You can imagine what great tuouble we had the school for the blind.

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：本题考查固定句型。have trouble(difficult) doing sth 做某事有困难。定语从句部分是I have had (great trouble) setting up the school for the blind。