Trả lời:

7:

1, If I have a lot of money, I will buy a villa and visit many countries.

2, If I learn English well, I will study abroad in America or England

3, If I have a headache, my mom will take care me carefully and I won't have to go to school (or do homework)

4, If I don't study hard, I won't get good achievement and I won't visit anywhere on summer holiday.

5, If I have a computer, I will use it 21 hours per day.

8:

1, We should clean the street every week.

2, We should raise awareness of protecting environment by not littering trash.

3, We should encourage people planting more trees

4, I should do the 3R (reduce - reuse - recycle)

5, We could inspire our friends of making the environment cleaner

$\text{Chúc bn hok tốt!}$

$\text{Xin CTLHN!}$

$\text{#BTS}$

Ex.2

1. I'll buy a new house.

2. I'll become an English teacher.

3. I'll stay at home.

4. I won't have career.

5. I'll search the Internet.

Ex.3

1. We should plant more trees.

2. We should reduce plastic bags.

3. We should recycle old things.

4. We should walk instead of use motorbikes or cars.

5. We should cycle.