Trắc nghiệm Anh 7 đề 10

Biogas can be used to ___ natural gas in cooking, heating, or electrical generation.

We should put ___ on our roof for the heating and hot water.

Human is looking for a clean, cheap and ___ sources of energy.

Remember to ___ the lights before going to bed 

___  can be an excellent source of free, renewable energy for poor farmers.

By the middle of the 21st century, people in developing countries ___  more renewable energy.

Laos and Cambodia have big plans for building up to 11 ___ on the lower Mekong. 

At this time next week, we ____ a wind turbine in our garden .

Low energy light bulbs should be used to ___ electricity. 

There are many available ___ power sources in Vietnam including sun, wind,water, etc