вопросы к предложению " i haven't taken a bus to zhytomyr yet "

1 have you taken a bus to... 2. Who has taken a bus... 3 where have I taken a bus to? 4. I haven't taken a bus to zhytomyr yet, have I? 5 haven't I taken a bus or a train to..?

have you already taken a bus to zhytomyr?
where have you taken the bus to?