.---How long did Mary work here?---For half a year, but she didn’t leave us much ____. We hardly remember what she is like. 

Do you have any ________on forbidding drunk driving ?

School children must be taught how to deal with dangerous ________ .

After swimming in the sea,they came out of water and lay on the ___________ for a rest.

People are using more and more natural gas, wind and other forms of _____.