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
网友回答
(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。