Keeping healthy, with easy access to affordable medical care, is still a dream for many people, with medicine price rising ________.

So far we have done a lot to build a low-carbon economy, but it is ____ ideal (理想). We have to work still harder. 

The rapidly growing birth rate brings about a lot of environment problems, which the government is supposed to take _____.

I don’t mind picking up your things from the store. _________ the walk will do me good.

 Our journey was slow because the bus stopped at different villages________．