问题补充:
It was the second-hand car that the mechanic spent the whole afternoon in the factory.
A. in repair
B. repaired
C. repairing
D. to repair
答案:
A. in repair
B. repaired
(答案→)C. repairing
D. to repair
解析:考查非谓语动词。It is … that …为强调句型,repairing the second-hand car为动名词做主语,故选C。