-Can you tell me why you learn English so well?-It’s very simple._____ you work,______ grades you will get.

----Do you often use Baidu?          ----Yes, it’s one of ___________Internet search engines.

 The world is getting smaller and smaller because the Internet gets us       .

—What’ s the low-carbon life style like? . —Save       energy, produce        carbon.

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