4. stop riding in cars     

3. 將來        

2. 紙巾       

1. 關掉燈       

5. 你應該步行或騎自行車上班，而不是開車。

You should walk or ride your bike to work      a car.

4. 拯救地球從小事開始。

       the earth        with small things.

3. 這個城市里的每個人都在盡力改善環(huán)境。

Everyone in this city is        the environment.

2. 這條河過去是如此的干凈，但是現(xiàn)在河底滿是垃圾。

The river        so clean,but now the bottom of it        rubbish.

1. 這種方法不僅殘忍，而且對環(huán)境有害。

This method is        cruel,harmful to the environment.

(   ) 5. ―Some children can't afford        necessary stationery.

       ―Let's donate our pocket money to them.

   A. buy   B. buying   C. to buy   D. be bought