Usage:I had a strong impression that some one was following me.
Usage:Are you absolutely positive that it was after midnight?
Usage:Euclyptus has very long and deep roots.
Dentist pulled the tooth out by the root.
The root of the problem lies in his quarrelsome behavior.
Usage:He will definitely come to receive her at the airport .
Usage:A foolproof security system should be there in the university campus.