The rivers will become dirtier and dirtier unless we take action to protect them.
A. take measures
B. take care
C. take advice
--- Because of the bad weather, the sports meeting has been cancelled.
--- What a pity!
A. put off B. called off C. taken off
A/An _______ is an unusual, exciting or dangerous experience.
A. advantage
B. research
C. adventure
---I felt very nervous before the exam.
---Take it easy. I believe you can do better this time.
A. happy
B. anxious
C. surprised
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
Why should we protect animals?
If not, they will die out.
A. disappear B. remain C. leave
