Correcties

House is really expensive in our city.It is unaffordable for the commen person, also it creats some problems.

My friend Susan has been nervous these days, because she has a different opinion with her boyfriend,where to buy a house.She decided to buy a house in the centre of the city.Concerning about their future, having a house in the city centre is a better choice,not only for the childrend's education but also taking care of the old.But only can be afforded second-hand house by them.

However, her boyfriend prefered the house in downtown,because he can afford a new one there.

What's more, Susan thought that buying a house in city centre is also a investment.I have no idea about that, but everything can be solved with a good conunication, I supposed.