1) mind your own business
2) keep to yourself
3) keep your head down
4) take a backseat
5) don't bite off more than you can chew
6) keep your nose clean
2009-04-21 13:30:19 補充:
同意002嘅講法。應該係話 minding my own business 或者 minding one's own business, 咁就唔係話人多事。