My brother is good at drawing, but he doesn’t like exercising , I don’t,________.

Li Xing’s illness(病) is very_____. You must take his illness ______. 

 ---George, how can you prove the earth is round?---I can’t, sir. ______, I never said it was.

— Ben looks strong. Has he ever been sick?— He’s a superman! He ________ goes to the doctor.

The article is ________ more difficult than that one, so I think I can understand it with the help of a dictionary.