I know what to expect怎么变被动句?

I know what to expect怎么变被动句? I'm not sure what to expect(同义句） I did not know what to expect when I was going to China I used to work in a nursery before so i know what to expect I've worked with children before ,so I know what to expect i I've worked with children before,so I know what to expect in 英语翻译I did not know what to expect because the excitement and We use knives to cut things怎么变被动句 i want to know what i should do.同义句 i don't know what to say 同义句 I am do not know what to say(同一句) 连词成句I,what,know,to,want,she,be