how do you think so和what do you think so

how do you think so和what do you think so do you think so? What do you think ( )you so happy? what do you think( )him so upset? 'Why do you think so?' You do not think so Why do you think so? i think you can do so.how about you? What do you think you China so?是否语法错误 What do you think?与What do you think so?有什么区别 What do you think of Nasreddin?Why do you think so? what do you think what do you think of how do you think how