The harder you study, __________grades you’ll get.

The new trains are much ______ than the old ones. 

 Of the two shirts, I’d like to choose the_____ one to save some money for a cap.

–What’s the price of iphone4S these days? --It is much ____. You may go and buy one.

Han Han is one of           writers, though some old writers don’t like him very much.