CHOOSE THE BEST ANSWER(VÌ SAO)
1/If we(repeat/recycle/rewrite/remark)waste paper,you will save a lot of trees.
2/Why do you often forget to(turn on/turn off/close/shut down)the lights when you go out of the classroom.
3/If we plant more trees in the school yard,the school will become a(greener/darker/dirtier/more polluted) palace.
4/”Reduce,reuse,recycle”is sail to encourage people to waste less,by using less and using things again,in order to(harm/damage/pollute/protect)the environment.
5/Please collect all the recyclable materials,and take them to the(recycle/recycled/recyclable/recycling)factory.
6/If we all use (recycle/reusable/old/waste)bags,we’ll help the environment.
7/These three Rs(stand up/stand for/ask for/means)reduce,reuse and recycle.
8/If there is a rubbish bin in every class,the classroom will become(harmful/lighter/dirtier/cleaner).
9/You should put the food in a reusable box (by/inteadof/because of/without)plactic bag.
10/My brother and I will give last years’s clothes to(a shop/people/a charity/a survey)intead of throwing them away.
11/Alternatine sources of energy (is/was/has been/will be)developed in the near future.
12/Fossil fuels are very common in our society(renew/provide/waste/pollute)the environment.
13/By the middle of the 21 cetury,people in developing countries(uses/will be using/used/have used)more renewable energy.
14/Hydropower is(limited/unlimted/abundant/enough)because dams cannot be built in certain areas.
15/The wind,the sun,and the wave are some types of(alternative/changeble/cheap/costly)sources of energy.
16/People won’t use flying cars(before/after/during/enough/)the year 2050.
17/We believe that urban transport pods can travel(with/at/in/on)around 30 kph.
18/My brother and I often come to school(with/by/in/on)foot.
19/The whiet cat is Halen’s,and the black cat is(my/mine/I/of mine).
20/This is Lan’s hat,and those shoes are(her/hers/our/their).
