Tham Gia Group Dành Cho 2K11 Chia Sẻ, Trao Đổi Tài Liệu Miễn Phí
II. Match the clauses.
1. There may have been life on Mars
a. after the tree is cut down.
2. As soon as the temperature increases and is h. before they release it to the environment?
3. Greenhouse gases trap some of the planet's c. until it underwent climate change.