Read the following passage and mark the letter A, B,C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks

Humans are destroying the earth’s tropical rain forests. About 80,000 square kilometers are being destroyed every year. About a quarter of the (38)_____ comes from people cutting trees for fuel. Another quarter is to make grassland for their cattle. The (39)______ trees are cut down to sell the wood to start farms.

The population in cities all over the world is growing, and more and more wood is needed to build huge new buildings. For example, 5,000 trees from Sarawak rain forest in Malaysia were used to build just one tall building. (40)_______ people continue cutting down that many trees in Sarawak rain forest, all the trees could be gone in eight years.

The world needs more food, and it (41)______ like a good idea to clear the rain forests and use the land for agriculture. Many people think that the land under these huge, thick forests must be in rich nutrients, but it isn't. This is another surprising thing about rain forests. Most of the land in tropical rain forest is very (42)________.

Điền bào ô 39

A. staying

B. remaining

C. standing

D. dwelling