Never form the habit of smoking because it ______ human beings. 

The painting was         what it used to be because it was once watered by rain.

If I find someone who looks like the suspect，my        reaction will be to tell the police. 

. ---Have you paid your phone bill? --- No, the bill is _____ at the end of the month.

I think you should go back to your          plan, which is much more practical than the present one.