题目内容：

-What a hero Mr. Ding is! I saw him appear on HBTV last night. He just saved a person in a 80-meter-deep cave(洞穴) in Enshi last month. He is really the pride of our school!

-Many people look up to him as a superman. But it’s hard to imagine he ____ all day long!

A. used to stay in

B. is used to do outdoor sports

C. gets used to teaching work.

D. didn’t like watching TV