I can’t believe that there are _____ many poor people in ____ a rich country.

I often thought of my childhood,             I lived on a farm.

China needs to strike a balance between maintaining a ______ fast and stable development and economic structural adjustment. 

 —Are you feeling ________？—Yes.I'm fine now.

One thing that most organically grown food products seem to have in common is that they cost more than ________ grown foods.