Someone says that love is a rose with thorns（刺）. It is attractive from a ______, but as soon as you touch it, you might get hurt.

The environment will ______ one’s character.

. It’s no ____that you can’t find anybody here. They are all away at a meeting at the moment. 

Teachers have to constantly update their knowledge in order to maintain their professional ___.

It is widely accepted reported in the western media that the drug ______ is now becoming a leading cause of teenager crimes.