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题目内容
（河南城建学院大学英语四）
41. (单选题) Do you know the difficulty he had ( ) the work?(本题1.0分)
A、 on finishing
B、 to finish
C、 in finishing
D、 having finished
A、 on finishing
B、 to finish
C、 in finishing
D、 having finished
参考答案