Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.They are conducting a wide____________of surveys throughout Vietnam.
A.collection
B.range
C.selection
D.group

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.The_________polluted atmosphere in some industrial regions is called “smog”.
A.much
B.largely
C.fully
D.heavily

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.Police are warning the public to be on the _______ for suspicious packages.
A.care
B.alert
C.guard
D.alarm

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.Mary couldn’t stand it anymore. She decided to speak her mind.
A.have a chat
B.make up her mind
C.say exactly what she thought
D.say a few words

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.The factory has to take on 200 workers in order to complete the plan.
A.fire
B.employ
C.lay off
D.apply

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.You must___________allowances for him; he is not very healthy!
A.get
B.do
C.make
D.have

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.I____________ it’ll rain this afternoon.
A.bet
B.promise
C.warn
D.vow

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.Scientists and engineers have invented devices to remove__________from industrial wastes.
A.pollutions
B.pollute
C.polluting
D.pollutants

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.Do you really expect him _________ treated in this way?
A.to not object to be
B.not to object to being
C.not to object to be
D.not object to being

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.Our country has large areas of_________ beauty.
A.unharmed
B.undamaged
C.unspoilt
D.uninjured