将下列句子合并成带有定语从句的复合句.

将下列句子合并成带有定语从句的复合句.
1.The man looks like the actor.I've heard his songs on TV.→_______________
2.The old man is a professor .He teaches chemistry in a college.→____________
3.The old workers is still working hard with us .His hair has turned gray.→___________
改错：
1.Two boys hurt while playing a ball.
2.The singer lived in London until he was sending to university .
3.How long do you think the meeting will be lasted .
4.A fire was broken out last night.
5.He had to travel by bus as his car was damaged in an accident a few days before .
6.The large building that is now built will be a hospital .
7.Class is begun at 7.30 every day.
8.His plan is sounded good
9.Your coat needs being washed.