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Bùi Công Trí

Finish the following sentences using a preposition:

1. Renewable energy sources can be reformed naturally in a short period of time. They are not used ... when the energy is exploited.

2. Using coal as a major energy source is not a good idea. It's running ...

3. Biogas system is introduced ... poor people because it supplies people ... electricity.

4. Garbage is burned ... produce steam ... making electricity or to provide heat ... industries and home.

5. The new crop of corn takes ... the carbon dioxide ... the air to reduce air pollution.

Chippy Linh
6 tháng 2 2018 lúc 17:01

Finish the following sentences using a preposition:

1. Renewable energy sources can be reformed naturally in a short period of time. They are not used .up.. when the energy is exploited.

2. Using coal as a major energy source is not a good idea. It's running .out..

3. Biogas system is introduced ..to. poor people because it supplies people ..with. electricity.

4. Garbage is burned .to.. produce steam ..for. making electricity or to provide heat ..to. industries and home.

5. The new crop of corn takes .up.. the carbon dioxide ..from. the air to reduce air pollution.

Giang
6 tháng 2 2018 lúc 16:59

Finish the following sentences using a preposition:

1. Renewable energy sources can be reformed naturally in a short period of time. They are not used ..to. when the energy is exploited.

2. Using coal as a major energy source is not a good idea. It's running for...

3. Biogas system is introduced .in. poor people because it supplies people .of.. electricity.

4. Garbage is burned ..to. produce steam .to.. making electricity or to provide heat .in.. industries and home.

5. The new crop of corn takes .of.. the carbon dioxide .on.. the air to reduce air pollution.


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