Why should we protect animals?

If not, they will die out.

A. disappear B. remain C. leave

When you cross the crossroads in the street, you need to guard against accidents.

A. protect yourself from

B. suffer from

C. keep in touch with

---I felt very nervous before the exam.

---Take it easy. I believe you can do better this time.

A. happy

B. anxious

C. surprised

A/An _______ is an unusual, exciting or dangerous experience.

A. advantage

B. research

C. adventure

--- Because of the bad weather, the sports meeting has been cancelled.

--- What a pity!

A. put off B. called off C. taken off

The rivers will become dirtier and dirtier unless we take action to protect them.

A. take measures

B. take care

C. take advice

He is one of the most celebrated writers in America.

A. important

B. famous

C. humorous

The ____ of something is the amount of money that you have to pay in order to buy it.

A. speed B. size C. price

---Is it _____ for you to go out tonight?

--- Sorry. I have to help my mother with housework tonight.

A. difficult

B. convenient

C. humorous

--- You look upset. What’s the matter?

--- Everyone ______ us to win the game, but we lost.

A. expected B. challenged C. promised