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complete sentences:
1. If we .........recycle......... waste paper, we will save a lot of trees.
2. You can save money while shopping by only buying ....what..... you need.
3. what can we do ..........to reduce... air pollution?
4. why do you often forget to......turm off.. the lights when you go out of the classroom?
5 If we plant more trees in the schoolyard, the school will become a....greener..... place.
V fill in each blank with on corect word
36 If we turn off the lights when are not using them, we will save a lot of _electricities_
1, Yes, it is
2, We shouldn't throw trash into the rivers and lake to keep the water unpolluted
END. 
1. Yes, it is.
2. We shouldn't throw trash into the the rivers and the lake to keep the water unnpolluted.
GOOD LUCK !
IV. Fill in each blank with One correct word
35 you can take these bottles to the factory to recycle them
36 If we turn off the lights when are not using them, we will save a _
37 If we recycle old newpaper, we will save a lot of trees
38 If we walk or cycle to school, we will improve our health and reduce pollution
39 recycling starts when we put rubbish such as empty bottles and cans in the recycling bin
We must slow down on busy streets
2 : All the students can be on time
3 : I can't go to school on today . I'm not fine
4 : There are many accidents on the roads . We must have discipline
5 : When we ride a motorbike . We can go ahead if the traffic light is green and we must if the traffic is red
6 : You have a lot of homework . You can't phat video games now
7 : The lights are red . You must stop
8 : We mustn't go very fast on the roads . It's dangerous.
1:must 4:must 7:must
2:can 5:can;mustn't 8:can't
3:can't 6:can't
1. Rewirte these sentences.
1) They began watching the movie one hour ago
=They have watched the movie for one hour
2)We tried our best but we didn't win the game
=Although we we tried our best , we didn't win the game
3) I am tried. I can't go to school today
=Because I am tried , I can't go to school today
4) She doesn't want you to go out alone at night.
=She say to you: " I don't want to go out alone at night "
2. Use the suggested words to write complete sentences.
1) We/ can/ not/ speak / English / when/ five/ years/ old.
We can not speak English when we were five years old.
2) Please/ turn/ the light/ when/ not/ use/.
Please turn off the light when you don't use.
1. Rewirte these sentences.
1.=>They have watched the movie for one hour
2.=>Although we we tried our best , we didn't win the game
3.=>Because I am tried , I can't go to school today
4.=>She say to you: " I don't want to go out alone at night "
2. Use the suggested words to write complete sentences.
1.=>We can not speak English when we were five years old.
2.=>Please turn off the light when you don't use.
The environment is senously polluted today. To protect the environment, we should reduce the plastic bags, bottles and cans. We should put the garbage in a certain place or in the recycling bins. Remember save and recycle paper so that we can avoid cutting a lot of trees in the forest. That means we can reduce the soil pollution. It would be better if we go to work or school by bike or walk, we can save energy and keep the air cleaner. Or we can reuse and recycle things. And we should not throw trash into the rivers and lakes to keep the water not polluted. Do these things we will protect the environment and we will live healthier life.
1. How is the environment today? The environment is senously polluted today.
2. Where should we put the garbage? We should put the garbage in a certain place or in the recycling bins.
3. Why must we save and recycle paper? We must save and recycle paper so that we can avoid cutting a lot of trees in the forest.
4. Will we live healthier life if we keep the environment clean? Yes, we will.
Read the passage and answer the questions.
The environment is senously polluted today. To protect the environment, we should reduce the plastic bags, bottles and cans. We should put the garbage in a certain place or in the recycling bins. Remember save and recycle paper so that we can avoid cutting a lot of trees in the forest. That means we can reduce the soil pollution. It would be better if we go to work or school by bike or walk, we can save energy and keep the air cleaner. Or we can reuse and recycle things. And we should not throw trash into the rivers and lakes to keep the water not polluted. Do these things we will protect the environment and we will live healthier life.
1. How is the environment today?
=> The environment is senously polluted today
2. Where should we put the garbage?
=> We should put the garbage in a certain place or in the recycling bins.
3. Why must we save and recycle paper?
=> Remember save and recycle paper so that we can avoid cutting a lot of trees in the forest.
4. Will we live healthier life if we keep the environment clean?
=> Yes , we will
energy / electricity
electricity