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 (垃圾) 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 or run．
Use your legs! It’s lots of fun!
●Turn off the water! Did you know that some toilets can waste (浪费) twenty to forty tons of water an hour? In a year, that 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．
Environment clubs ask students        ．

A．to run to school every day

B．to take exercise every day

C．not to forget to take cars

D．not to throw away lunch bags

On a no-car day,           will take a car to schoo1．

A．both students and teachers	B．only students
C．neither students nor teachers	D．only teachers

After students mend toilets，they save        ．

A．a small river	B．a club
C．a lot of water	D．a toilet

The writer wrote the passage to ask students to        ．

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