Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Most of the air pollution results ____ the burning of fossil fuels, motor vehicles, factories, aircraft and rockets.
A.in
B.to
C.on
D.from

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
If she hadn’t helped her husband, he ______________ his project.
A.won’t have finished
B.couldn’t finish
C.couldn’t have finished
D.won’t be finished

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The Vietnamese boy was regarded as a hero __________ he dedicated his life to his country.
A.although
B.because of
C.providing
D.because

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Geography is a very interesting subject. ________, very few people study it thoroughly.
A.And
B.However
C.Moreover
D.So

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The complaints he received were like water off a duck’s ___________.
A.wings
B.body
C.back
D.feather

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
With the Government’s careful preparation as well as the support of the countrymen, Vietnamese athletes competed in high ____________.
A.values
B.spirits
C.strokes
D.beliefs

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
In the 22nd Sea Games, many Games ____________ were close to international levels.
A.records
B.ranks
C.scores
D.goals

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Make sure your car runs on unleaded petrol and your home uses sources of ____ energy.
A.recycling
B.reused
C.renewable
D.recyclable

It is possible that there may be ........... to other planets within our own lifetime.
A.global flights
B.sea travels
C.space flights
D.overland trips

A large number of students in this school _______English quite fluently.
A.speaks
B.is speaking
C.has spoken
D.speak