句子变被动语态

Who was given the bike to by you?
你可以首先把这道题变为陈述句：
You gave the bike to whom
再把这个句子变为被动语态：
The bike was given to whom by you.
再变为疑问句：
Who was given the bike to by you?

Whom was the bike given to?

Who was given the bike by you?

Whom did the bike be given to(by you)?

whom the bike be given to by you?