请问“Who was the car invented by?”和“Whom was the car invented

问下who was the car invented by?与who were the cars invented by who was the first car invented by的同义句 The car was invented by him. when was the car invented What was invented before the car?为什么 1.who was the radio invented by?可不可以改成by whom was the radio I think the car was invented( in 1885) 汽车在1885年发明是the car was invented 还是car was invented,这类题目到底要不要 英语who was it invented by 用who 还是whom? The car was invented in 1885 为什么要用the car 而不用cars when was the ...invented? who were they invented by? what an Do you know by whom the light bulb was invented? by whom是怎么理