If you want to be a ______, you should study math hard.

— When will the London 2012 Olympic Games start?— It will start on July 27th. You can visit London this ________.

Some money which is given as a “present” in a competition is a ______.

The Internet is very useful. We can get a lot of __________ from it.

Millie is one of my best            and she is a            girl.