Choose the best answer to each of the following questions
The twins used to play rugby when they were four year old, ________ ?
A.don’t they
B.didn’t they
C.didn’t used they
D.did they

Choose the best answer to each of the following questions
You ________ ask a woman about her age. It’s not polite.
A.must
B.need
C.musn’t
D.needn’t

Choose the best answer to each of the following questions
Their plans were cancelled _______ of a bad storm.
A.in spite
B.because
C.instead
D.in place

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