Finding information in today’s world is easy．The_______is how you can tell if the information you get is useful or not。

A large sum of money has been raised for the          of the poorly-educated children in the mountainous areas．

See  what  you’ve  done! Don’t you have a  _____  of right or wrong? 

I tried to persuade him to give up the foolish idea, but in ________, and now he begins to regret.

---Don't be so naughty! Be your ________.---Got it.