Then how do you know he is happy（翻译中文）

Then how do you know he is happy?急用! how do you know How do you know? Then how do you know he is happy（翻译中文） How do I know you? How do you do that?should you do then? Then the machine will let you know how happy you Then the machine will lei you know how happy you then how do u get to know Sina Microblog.翻译 do you know how to wash clothes 或plant a tree 回答 但顺序说 first dig a hole then ... do you know how much i love how much do you know really about do you know how to write How many color do you know? HOW MANY COLORS DO YOU KNOW? HOW MUCH DO YOU KNOW ABOUT How much do you know about AIDS how many dinosaurs do you know?