改下面短文里的错误、没有错误的哪一行打√
Do you know how more people are riding bikes to work? ____
We can answer the question with different ways.First,bikes ____
don't need petrol.So they don't use too many money to ____
buy them.Also bikes don't need much place on the road.That is ____
easy to find a place for it.And it is good for one's healthy ____
to ride a bike.Too often people only drive their cars to work or ____
to shops.They think riding bikes are a kind of exercise.That's ____
why a lot of people are now riding to work by their bikes. ____
To keep fit,more and more people like riding bikes instead ____
driving their cars when they go to work or to school. ____