Thousands of athletes _______ in many countries will compete ________ medals in the 2008 Olympic Games in Beijing.

He told us that his father was good at _______ bedtime stories.

Walk faster，________you may catch up with your friends ahead.

two centimeters higher, _______ break the world record,” encouraged the coach.

A father in the UK has a wonderful idea to send his kids to school on time. He takes his sons to their school in a white tank(坦克).