Choose the best answer to each of the following questions
I’ll lend you the money and you ________ pay me back till next month.
A.needn’t
B.mustn’t
C.need
D.must

Choose the best answer to each of the following questions
There are many ________ of pollution in our modern world.
A.resources
B.sources
C.foundations
D.bases

Choose the best answer to each of the following questions
Many people _________ that natural resources will never be used up.
A.view
B.consider
C.believe
D.regard

Choose the best answer to each of the following questions
The government _________ the flood victims with food, clothers and money.
A.gave
B.provided
C.offered
D.presented

Choose the best answer to each of the following questions
More and more people __________ of food poisoning nowadays.
A.exits
B.survive
C.die
D.starve

Choose the best answer to each of the following questions
The raw sewage needs to be ________ treated.
A.chemically
B.chemical
C.chemist
D.chemistry

Choose the best answer to each of the following questions
A lot of different conservation efforts have been made to _______ endangered species.
A.save
B.kills
C.make
D.do

Choose the best answer to each of the following questions
_______ is destroying larger areas of tropical rain forests.
A.Disforestation
B.Deforestation
C.Anti-forestation
D.forests

Choose the word whose stress part is placed differently from that of the others
A.derive
B.contain
C.leopard
D.prevent

Choose the best answer to each of the following questions
Many plants and endangered species are now endangering of _______.
A.expression
B.expulsion
C.extinction
D.extension