Have you heard that there are many rotbots_ in modern factories A to work B working C work D worked5555555跪求解和原因

heard 和heard of的区别?have you heard that?have you heard of that?有啥分别? Have you ever heard have you heard have you have you heard Have you ever heard that I love you这句中的that可以去掉吗 could you please tell me something about the person( A that you have heardB that you have heard ofC who you hearD which you have heard of选什么?为什么? Have you heard from ___recently? Have you heard it before? have you heard什么意思 you have probably heard itbefore i heard that you have a final competition .today,i hope that you mush have a change to win it, i have heard that you( )just( )the football mi have heard that you( )just( )the football match我听说你们已经赢了足球比赛 They will let you to know that they have heard your signal 找一处错误 并改正 they will let you know that they have heard your signal 翻译中文. I suppose that you have heard her name before!这句话语法对吗? 改错：Have you heard that Jeff's leg was broken while playing football?没看出语病~ but have you ever heard of a computer that saved a person's life? I heard that you already have their own happiness,so do not often meet it, Bill is ill.Have you heard about it?请问it 可以换成that吗?为什么呢?