In most parts of the world， many students help their schools make less pollution． They join "environment clubs"． In an environment club， people work together to make our environment clean．
Here are some things students often do．
No-garbage lunches． How much do you throw away after lunch？ Environment clubs ask students to bring their lunches in bags that can be used again． Every week they will choose the classes that make the least garbage and report them to the whole school．
No-car day． On a no-car day， nobody comes to school in a car． Not the students and not the teachers! Cars give pollution to our air， so remember： walk， jump， bike and run． Use your legs! It's lots of fun．
Turn off the water! Did you know that some toilets can waste twenty to forty cubic （立方） meters of water an hour？ In a year， it would fill a small river! In environment clubs， students mend those broken toilets． We love our environment． Let's work together to make it clean．



After students mend toilets， they save ______ ．

A. water in cubic meters
B. a small river
C. a club
D. a toilet

From the passage we know the students usually have lunch ______ ．

A. in shops
B. at school
C. in chubs
D. at home

The writer wrote the passage to ask the students to ______ ．

A. clean school
B. make less pollution
C. join clubs
D. help teachers

Which of the following statements is true？ ______

A. In the clubs， students usually work together to make the earth less polluted．
B. Students can take their lunch in paper， so they can throw it after lunch．
C. On No-car day， only the teachers can go to school in their cars．
D. The water in the toilet can fill a river．