6. People generally think that smoking is a bad ______ .
Luckily, there is a hospital ____ and they soon took the wounded man there.
My son ____ the examination, but he wasn't careful enough.
---- Must we clean the house now? -----No, you _______.
It was almost midnight when the fire ____ in the neighborhood.
A lot of policemen were sent there to ____ the football fans from making trouble.