IELTS Grammar: correct the mistakes

 Try to correct the mistakes in the following sentences.

1. More proportion of American people in 1970 than in 2000 got married.
2. There are many things easy enough for those young people to do.
3. I am agreed that volunteer work can build up the responsibilities in youngs.
4. Society gets benefitted as the juvenile crime rate reduced.
5. Having a work experience may help to having a job quicker and easier.

PS. Nobody answered this question from Monday's reading lesson:

If a survey showed that "households spent seven hours a day on transporting themselves and their goods", does this mean that it was "a survey of household expenditure on transport"?