Small things can make a big difference to the environment. In daily life, we can     to protect the environment.

①give out food to homeless people

②use cloth bags instead of plastic bags

③)turn off the lights when leaving a room

④help the old people in the neighborhood

⑤ride bikes or walk to school rather than go to school by car

A、②④⑤

B、①③④

C、②③⑤