It was the old clock that the old man spent the whole morning at home.A. repairingB. rep

问题补充：

It was the old clock that the old man spent the whole morning at home.

A. repairing

B. repaired

C. to repair

D. in repair

答案：

(答案→)A. repairing

B. repaired

C. to repair

D. in repair

解析：此为一强调句型，repairing the old clock在原句中充当介词in的宾语。