2 A
II
1 D
2 B
3 B
4 B
5 C
6 A
C
II
1 B
2 C
4 A
D
I
1. It's over 20 kilometers from my house to Ha Noi.
2. My brother used to watch TV in his free time last year, but he no longer does it.
3. Much biogas will be used in the countryside in the future.
4. These are Lan's flowers.
II
1 Solar energy will be used by many countries in the world
2 How will you travel from one place to another
3 We will reduce the use of electricity to save our energy
4 There are always trafic Jam during rush-hours