Information and opinion gap exercises have to have some content ______ talking about.

This is a newly developed software from which your computer can      .

 一What will happen to the children if Jim and Mary    ?一I don’t know but I think it’s a really terrible thing. 

Parks are _____ of the few places where people in cities may have sports.

．To deal with the global financial crisis, China ______ the international community to help developing countries．