Bella, one of the top students in her class, always gets up early and hopes to get better grades by working hard.

Vincent has joined a mountain climbing club. The club members will have a climbing trip next week and he will be the leader of the team.

Aileen is an English teacher. She always knows what's going on in class, even when her students are passing notes behind her back.

Sam is a newcomer to a high school. He feels a little nervous in the classroom with a lot of strangers around him.

Victor's friends are taking a high-speed train to visit him. But his friends are late. He is now waiting for them at the station.

A. In many ball games, the most important person is the one whocarries the ball. Such a person is the leader and he makes sure that a job gets done.

B. Birds feed on worms. A bird will go hungry if it cannot catch worms. The bird that gets up early is sure to get some food, sothe early bird catches the worm.

C. Your feet become hot when you run. But when you are forced to sit in one place, your heels stay cool. When someone keeps you waiting, you can say he iscooling your heels.

D. Some people seem to know what's going on behind them, as if they had eyes in the back of their heads. "Eyes in the back of your head" describes the ability to notice everything happening around you.

E. You don't know what will happen if you wake up a sleeping dog in the street, so it would be mach smarter tolet sleeping dogs lie.

F. People may get their feet into the water slowly when they start to lean swimming. "Get your feet wet" means trying to do something for the first time.

G. Fish live in water. A person who is in a strange or uncomfortable environment may feel likea fish out of water.