Tham Gia Group Dành Cho 2K11 Chia Sẻ, Trao Đổi Tài Liệu Miễn Phí
Exercise 7. Choose the word or phrase (A, B, C or D) that best fits the blank space in each sentence.
they are harmful to the environment.
energy sources can be used to create energy, generate electricity, or drive big machinery but
energy i ...