问题
选择题
You can’t imagine what great trouble the doctor had ______ the patient.
A．treats
B．treating
C．to treat
D．treated
答案
答案：B
考查固定搭配。the doctor had ______ the patient是定语从句，先行词是great trouble，代入定从，应是the doctor had great trouble（in）treating the patient，考查做某事有困难结构，所以选B。