In most parts of the world, many students help their schools make less pollution. They join an “environment club”. 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, run, or bike! Use your legs! It’s lots of fun!
Turn off the water! Did you know that toilets厕所 can waste twenty to forty tons（吨）of water an hour? In a year, that would fill a small river! In the environment clubs, students fix（修理）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 fill a river every day

C．not to forget to take cars

D．not to throw away lunch bags

From the passage we know the students usually have lunch           .

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

On a no–car day students can’t           .

A．go bike riding	B．go to school in a taxi
C．take a walk	D．build a car

After students fix toilets, they save           .

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

What’s the passage mainly about?

A．How students help make less pollution.

B．How students clean their school.

C．Asking students to join the environment club.

D．How students help teachers.