Mr.Smith was much surprised to find the watch he had had was nowhere to be seen.
A. repairing
B. it repaired
C. repaired
D. to be repaired
网友回答
A. repairing
B. it repaired
(答案→)C. repaired
D. to be repaired
解析：he had had repaired是省去了关系代词that/which的定语从句。