The doctor told him to take a fat-free ________. 

The law about banning using thin plastic bags came into_____from 1st Jane this year. 

— How do you find your English teacher? — She is always full of _____ as though she never knew tiredness.

In dealing with public relations，we should make every effort to prevent the_______in personality.

In order to create a comfortable shopping environment, the mall placed a(n)     on smoking.