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

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

答案及解析： A

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。