阅读下面短文，从每题所给的A、B、C、D四个选项中，选出一个能填入文中的相应空白处的最佳答案。
Many kids want to help keep the environment clean but don’t know where to start.      , even the simplest everyday activities can make a real difference to the environment. Here is how:
Don’t litter. Litter can       our water and that could do harm to us and to wildlife.
Recycle bottles, paper and plastic. This is a good       to develop and can really make a difference.
     turn off lights and electronic devices（设备）when they are not being used.
Use your      or walk to nearby locations rather than riding in a car. Encourage your friends and family to       the same.
Don’t throw your old clothes or toys away. Give       to a local charity（慈善组织）or a friend that may need them.
    wasting plastic bags by bringing your own reusable cloth bags to stores.
If you see litter,      .
By following these tips and using them in your everyday life, you will make the world a       place. It’s never too late to start, and what better time is there than right now?

A．At first B．In the end C．In fact D．As a result

A．pollute B．use C．clean D．waste

A．interest B．plan C．skill D．habit

A．Still B．Even C．Always D．Never

A．train B．plane C．car D．bike

A．do B．look C．say D．wear

A．it B．them C．this D．that

A．Keep B．Try C．Enjoy D．Avoid

A．look it up B．pick it up C．put it up D．fix it up

A．bigger B．greener C．more peaceful D．more modern