Iknow myself better than anyone eles does.我比任何人都了解我自己.have difficulty in是啥意思，能用这个词造个句子吗。能把The robot is greeted by students in the classroom.It is also greeted by the sick students in the hospital改为同义句吗。再给你加五分对…有困难；在某方面有困难I have difficulty in english studing.He usually helps me when I have difficulty in studying.当我在学习中遇到困难时，他总会帮助我。下面那个是被动和主动的问题students in the classroom greet the robot.the students in the hospital do this too。这是一般现在时，过去式的话在greet后加ed是同义句转换了，不是主动变被动了，不过还是谢谢了