Chuyển các câu sau đây sang câu bị động:
1) Someone collected the garbage yesterday
-> The garage was collected by someone yesterday
2) Did they throw garbage into the river?
-> Was the garbage threwn by them into the river?
3) He didn’t keep the key in that box
-> The key wasn't kept by him in that box
4) They don’t include service in the bill.
-> Service isn't included by them in the bill
5) What sports did Tom play.?
-> What sports were played by Tom?
6) His older brother didn’t pass the exam last week
-> The exam wasn't passed by his older brother last week