Form a suitable word from the word stem to fill the sentences

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1. Have you found a .................. to that math problem?

2. Natural sources cannot provide enough, energy to support this .................... world.

3. Do they know that we have ..................... cars? They don't need a driver.

4. Of all the ................... in the world, which one do you like best?

5. Playing outside is ............... healthy than staying inside.

Read the passage and complete the sentences

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

Question: Biogas helps solve the problem of indoor ________________________.

 Fill in each blank with one suitable word.

Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone's (29)____________ life. You turn on the lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You (30)__________ your meals and it is energy that gives you heat to boil rice.

The problem is that the demand for energy is rising and that the price of energy isgetting (31)__________ and higher. The supply of energy on earth is limited. It cannot provide us all forever. The shortage of energy in the future is inevitable. Therefore, (32)__________ energy is a must if we want to continue to live in a safe and sound world.

help me

Put one suitable word in each space

Energy is one of the (1)______ that many people interested in. It is not an unfamiliar word. It is heard, said, discussed say after day. It is close to everyone's (2)________life. You turn on the lamp and it is (3)______ that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you (4)______ You cook your meals and it is energy that gives you heat to boil rice

The problem is that the demand for energy is rising and that the price of energy is getting (5)______ and higher. The supply of energy on earth is limited. It can not provide us all forever. The (6)_____ of energy in the future is inevitable. Therefore, saving energy is a must if we want to (7)_________ to live in a safe and sound world. If we save energy, the (8)_______ will be less polluted and our health will be better and we will live a more meaningful life and more happily. Perhaps the best (9)________ to the problem of energy is a source of clean energy coming from the sun : solar energy. This kind of energy is easy available, free, and inexhaustible. Futhermore, it does not cause (10)______

Rewrite these sentences so that the meaning stays the same to the first.

1. We will use sources of energy more effectively for our future.

-> Sources of energy______________________

2. We will solve the problem of energy shortage by using solar energy.

-> The problem of energy shortage___________________

3. They will replace coal by another renewable source.

->Coal_________________________

4. They will use flying car to travel form place to another place.

->Fluing cars_____________________

I. Give the correct from of the word given to complete the sentence.

I. Give the correct from of the word given to complete the sentence.

Read the passage and complete the sentences

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

Question: People in ________________________ areas have to gather wood to use as fuel.

Read the passage and complete the sentences

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

Question: Biogas is mainly used for ________________________.