A. Informal
Đáp án B
A. thân thiện
B. không lời
C. bằng miệng
D. trang trọng
According to the passage, which of the followings supports healthy ecosystems?
Which of the followings is the flow of water from the ground to the surface?
It works like a greenhouse, that’s why we call (25) _________the Green House effect.
According to the passage, what can be learnt about passive students?
The word "adjoining" in bold in paragraph 2 is closest in meaning to___________.