帮忙改成被动形式.
1.The owner made them work long time thirty years ago.
2.Mr.Ling asked Tom a question about the pollution in class.
3.Students would make Paul thier school football team leader.
4.They have given many children new clothes.
5.At present,men and women,old and young,are learning the problem all over the country.
6.Mr.Steve was repairing the machine over there when Mick came.