1. The world's rain forests are being cut down at the rate on 3,000 acres per hour. A B C D 2. Many scientists fear that the earth will run out essential natural resources before the end of the 20 century. A B C D 3. Because much species of plants and animals in Hawaii are threatened with extinction within a short period A B C of time, scientists are trying desperately to rescue them. D 4. Her many friends, among who I like to be considered, gave her encouragement. A B C D
2 câu trả lời
1. At the rate on - at the rate of
2. Will run out - will run out of
3. Much - many
4. Among who - among whom
Gửi bạn tham khảo!
1. At the rate on -> at the rate of
2. Will run out -> will run out of
3. Much -> many
4. Among who -> among whom
