The air in Lanzhou is getting much _____ now than a few years ago .

Wang Lin has decided to ______his bad habit of smoking. — That’s good news. I hope I can do it.

Tom likes playing the violin and is good at English.______his sister.

When and where to spend the holiday ____ yet.—Let’s make it now.

The presidents of China and the USA had ________ interview a short time ago.—And it was ________ great success.