The lesson includes a video tutorial, a follow-up video or audio and an interactive test.
It is never easy nor pleasant to respond negatively to a request or an offer someone makes to you. Here you will learn the strategies and expressions / phrases that can save face when your answer is “no”. English can be very diplomatic and it allows you to formulate your words in such a way that your “no” does not hurt or offend the other person. Check it out, stay cool, be nice.