1 . Renewable energy causes less pollution than fossil fuel

2 . You're never late for school, are you 

3 . There are more people in Hanoi than Hue

4 . Led light bulbs consume less energy than normal light bulbs

5 . There are fewer people in the countryside than the city

6 . There will be more people in the world in coming year

Đáp án:

1.Renewable energy causes less pollution than fossil fuel.

2.You're never late for school, are you?

3.There are more people in Hanoi than Hue.

4.LED light bulbs consume less energy than normal light bulbs.

5.There are fewer people in the countryside than the city.

6.There will be more people in the world in coming year.

7.With the flying cars, there will be fewer traffic jams.

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