$\text{1.}$ B

$\text{→}$ It has been one of the main sources of energy.

$\text{2.}$ B

$\text{→}$ Alternative energy is developed to replace fossil fuel in the future.

$\text{3.}$ A

$\text{→}$ Many countries have installed solar panels and built windmills to generate power.

$\text{4.}$ A

$\text{5.}$ B

$\text{→}$ Renewable energy such as solar power, wind power is environmentally friendly.

Vocabulary:

- fossil fuel: nhiên liệu hóa thạch

- development <n>: sự phát triển

- reliant <adj>: tin tưởng, tín nhiệm

- alternative energy: năng lượng thay thế

- finite <adj>: có hạn

- non-renewable: ko tái tạo dk

- install <v>: lắp vào

- generate <v>: phát ra

- contribute <v>: góp phần

- emission <n>: khí thải

- environmentally friendly: thân thiện với môi trường