Beijing is the capital of China and it is one of  ______ cities in the world. 

There will be _____ pollution this year than last year.

—How do you like our new teacher? — Very ______. He often says something new to make us laugh.

— Health is money.— But I think it is            money. 

 The medicine may help with your illness, but it may make you _____ , so you must be careful not to drive a car after taking such a medicine.