---- I wonder how much you charge for your services． ---- The first two are free ____  the third costs $30．

In the English language, sentence stress is like word stress and is _________ gives English its rhythm.

He didn’t put the things ____they belonged, for ____he got his punishment. 

It’s the first time ______ he has helped us. 

Now let me tell you the work I have been doing with them. My job with the UN is not paid, but voluntary and as I said _______, I mainly visit countries where the UN has programs to help people.