Many scientists are optimistic that the earth will be greener, cleaner and better for us to live on.
D. negative
Đáp án đúng: B
Giải thích: optimistic (adj): lạc quan >< pessimistic (adj): bi quan
Dịch: Nhiều nhà khoa học lạc quan rằng trái đất sẽ xanh hơn, sạch hơn và tốt hơn cho chúng ta sinh sống.
Choose the word whose underlined part is pronounced differently from that of the others.
Trang An Scenic Landscape Complex was recognized as a World ____ Site in 2016.
Alex is talking on the phone. He talk on the phone for two hours