英语who was it invented by 用who 还是whom?用who 还是whom?

英语who was it invented by 用who 还是whom?用who 还是whom?
英语who was it invented by 用who 还是whom?
用who 还是whom?

英语who was it invented by 用who 还是whom?用who 还是whom?
用whom
因为陈述句是IT IS INVENTED BY WHOM,介词后宾格,所以疑问句也用宾格whom.