If you want to change the world, you have to ______ yourself first.

You always spend only a little time on your study. You really ____me down.— I’m sorry, Mum. I won’t do that again.

It’s kind ________ you to get a cup of tea for me. [ ]

Which would you like,tea or coffee? — Either _____ OK, but I prefer coffee _____ milk. [ ]

Swimming is good _____ our health, but at the same time we mustn’t forget the danger. [ ]