Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The doctor wants to know the symptoms of a wasp sting, so he tries _____ by one.




A.to be stung
B.to sting
C.being stung
D.stinging

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Once ______ as the World Natural Heritage by UNESCO, Phong Nha – Ke Bang National Park attracts a great number of visitors worldwide.




A.having recognized
B.recognized
C.recognizing
D.is recognized

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
__________, she complained to the head teacher.




A.Once annoying by the boys' behaviour
B.Annoyed by the boys' behaviour
C.Having annoyed behaviour by the boys
D.She annoyed by the boys' behaviour uncommon

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
You should use this cream _______ the sun from damaging your skin.




A.for prevent
B.to prevent
C.to preventing
D.preventing

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Tom went to the dentist to have his decayed tooth ______ as he couldn’t stand the toothache.




A.relieved
B.ruined
C.destroyed
D.extracted

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
We ____ our classroom for the upcoming Teachers' Day, but there's still a lot to do.




A.decorated
B.have been decorating
C.are decorating
D.have decorated

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
____________ one of the most beautiful forms of performance art, ballet is a combination of dance and mime performed to music.




A.Being considering
B.Considering
C.Considered
D.To consider

___________ (65)




A.to
B.towards
C.in
D.by

___________ (61)




A.from
B.with
C.by
D.at

What are nitrates used for?




A.They preserve flavor in packaged foods.
B.They preserve the colour of meat.
C.They are the objects of research.
D.They cause the animals to become fatter.