Use your own idea to complete the following sentences:

If we keep hunting animals, ........................................

If we cut down all the trees, ........................................

Read the text and say these statementa are true or false:

Land pollution:

If we don'recycle plastic and glass, they stay in the ground for a long time. Dangerous chemicals can also go underground, where they are harmful to plants and animals. Whenever we recycle bottles and cans, we reduce land pollution.

Airpollution:

Some power plants and factories put pollution into the air. Cars trucks and planes can also cause air pollution. Whenever we ride a bike or keep the air conditioner low, we reduce air pollution.

Waterpollution:

The same plastics and chemicals that are harmful to our land can also be found in our ocean, rivers and lakes.

Whenever we recycle garbage or shut off the water pollution. 

Write True(T) or False(F):

1.Plastics, glasses and chemicals underground are harmful to plants and animals.

2. Land pollution is cause by dangerous chemicals in the ground.

3. We should recycle plastic and glass to reduce land pollution.

4. Air pollution only cause by cars, trucks and planes.

5. We can reduce air pollution by building more power plants and factories.

6. Water pollution is causes by some plastics and chemicals in the seas, rivers and lakes.

7. We recycle garbage and shut off the water to increase water pollution.

Ai nhanh mik tick cho tick.

Put the verbs in the brackets in the correct tense
1. If you __________ (expose) phosphorus to air, It __________ (burn)
2. If you __________ (heat) ice, it __________ (turn) to water.
3. If metal __________ (get) hot, it __________ (expand)
4. If you __________ (stand) in the rain, you __________ (get) wet
5. If anyone __________ (ring) the bell, don’t __________ (open) the door.
6. If my father __________ (not, sleep) well, he __________ (drink) coffee before going to bed
7. If you__________ (press) this button, the machine __________ (stop)
8. If you__________ (multiply) 6 to 8, you__________ (get) 48
9. If anyone __________ (call), say that I__________ (be, not) at home.
10. If you__________ (go) to the Post Office, you__________ (mail) this letter for me.

 

VI. Read the passage carefully, then choose the correct answers.
Do you run the faucet while you brush your teeth? Do you know that you are waating the water? Whenever you turn on the faucet, think about how you'd feel if you had to carry that water from a well! Then you'll remember not to run extra water while brushing teeth. Is there littor around your school or at the park? Litter doesn't look nice but some litter can be harmful to other creatures Always put litter in trash cans and be sure lo recycle all the aluminum and steel cans. Look for the triangle at the bottom of plastic containers. If you see the numbers 1 or 2 in the triangle, the plastic item can be recycled
Even something as simple as using bothi side of a piece of paper can help the earth.When you are finished with a school worksheet, use the back of the paper for drawing or feed it back into printer to use for another worksheet. You can save electricity by turning off the computer or other electronics when they are not being used and don't forget to turn off the lights when you leave a room
32. What can people do to help the earth?
a. Save water b. Reuse waste paper c. Recycle things d. All of the above
33. Which of the following cannot be recycled (or reused)?
a. Plastic b. Water c. Paper d. Metal
34. What symbol can you see at the bottom of the container that can be recycled?
a. Circle b. Oval c.Triangle d. Diamond
35. What can you do to save electricity?
a. Turn off the television when you are not watching it
b. Turn off the faucet when you finish using.
c. Use a worksheet with single printed page for another worksheet.
d. Look for recycle information at the bottom of plastic containers.
36. Which of the following is not the writer's advice?
a. Reuse and recycle paper, bottles and cans.
b. Put litter in trash cans.
c. Save water and electricity.
d. Reduce the amount of garbage we produce

   1.        Put the verbs in the brackets in the correct tense

        1.1.        If you ………………...(expose) phosphorus to air, It ………………... (burn)

        1.2.        If you ………………... (heat) ice, it ………………... (turn) to water.

        1.3.        If metal ………………...(get) hot, it ………………...(expand)

        1.4.         If you ………………...(stand) in the rain, You ………………...(get) wet

        1.5.        If anyone ………………...(ring) the bell, don’t ………………...(open) the door.

        1.6.        If my father ………………...(not, sleep) well, he ………………...(drink) coffee before going to bed

        1.7.        If you………………...(press) this button, the machine………………... (stop)

        1.8.        If you ………………... (multiply) 6 to 8, you ………………... (get) 48

        1.9.        If anyone ………………...(call), say that I ………………...(be, not) at home.

    1.10.        If you ………………...(go) to the Post Office, you ………………...(mail) this letter for me.

II. Write the correct form of each verb in brackets.
1. If you put the glasses into very hot water, they……………………(crack).
2. If Peter………………(be) late, we will wait for him.
3. No one…………………..(help) if you don’t help yourself.
4. If you boil water, it…………...……(disappear) into the atmosphere as vapor.
5. If it rains tonight, I…………………..(not go) for walk.
6. The town will flood if there …………………(be) a downpour.
7. The bear will attack you if you…………………..(provoke) it.
8. If we sit too far from the screen, I……………..(not be) able to see the film.
9. If there is an earthquake, the villagers ……………….(stay) in the shelter.
10. If we plant more trees, the air………………….(be) fresher.

II. Write the correct form of each verb in brackets.
1. If you put the glasses into very hot water, they……………………(crack).
2. If Peter………………(be) late, we will wait for him.
3. No one…………………..(help) if you don’t help yourself.
4. If you boil water, it…………...……(disappear) into the atmosphere as vapor.
5. If it rains tonight, I…………………..(not go) for walk.
6. The town will flood if there …………………(be) a downpour.
7. The bear will attack you if you…………………..(provoke) it.
8. If we sit too far from the screen, I……………..(not be) able to see the film.
9. If there is an earthquake, the villagers ……………….(stay) in the shelter.
10. If we plant more trees, the air………………….(be) fresher.

THANKYOU

into - dangerous - chemicals - of - let - sure - with - fire

You must put all (1) _____________ and drugs in locked cupboards. You must not (2) _______________ children play in the kitchen. The kitchen is a (3) ___________ place. You have to make (4) _____________ children do not play (5) _____________ matches. Remember, it only takes one match to cause a (6)__________ .You must cover electrical sockets so that children do not try to put anything (7) __________ them .Electricity can kill .You have to keep all dangerous object out (8)___________ children's reach.