What could we do to deal with the soil problem in Nepal?

I really want to know what we can do to help them 这里为什么不能用what we could WE DO WHAT WE WANT TO DO What could we do to deal with the soil problem in Nepal? what do we -----to buy?we---to--- What else do we have to do? we don't know _____?A:what do we do B:what to do C:what do we to do D:what to do we do WHAT WE TO DO next?what are we to do next?为什么 或WHAT DO WE TO DO NEXT?为什么 What are we going to do today? We should ---------- what to do next .(consideration) What are we going to do now? what can we do to protect AIDS What do we need to take photos? What should we do to prevent AIDS? We don't know what to do. what can we do to protect? what we ought to do to do well for our we did what we could to study well.=we did ____ _____ to study well. After an earthquake,what could a snack robot to do?