Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The search for a new vaccine took priority ______ all other medical researches
A.to
B.above
C.on
D.over

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
As you’ve arrived late, you’ll have to ________ the time you’ve lost.
A.make up to
B.make up for
C.do up for
D.do up to

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
_____ Paul realized that he was on the wrong flight.
A.Not until the plane had taken off did
B.No sooner had the plane taken off that
C.Before the plane had taken off
D.Only after the plane had taken off

Choose the best answer.
The boys were taken ______ a fishing trip last weekend.
A.to
B.in
C.on
D.for

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
He was completely _____ by her tale of hardship.
A.taken up
B.taken away
C.taken in
D.taken down

Choose the answer among A, B, C, D to complete each of the sentences below:
The doctor told him to keep _______ sweets and chocolate to lose weight.
A.at
B.off
C.up
D.back

Choose the best answer.
The teacher explained the competition's rules ______ the students very carefully.
A.with.
B.for.
C.to
D.about

Choose the best answer.
Does he tell you how he is getting ________ his new friends?
A.away with
B.on of
C.out of
D.on with

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
Could you please tell me ______?
A.where my uncle’s room is
B.where does my uncle's room
C.where my uncle's room
D.where is my uncle’s room

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
Vietnam’s rice export this year will decrease_________about 10%, compared with that of last year.
A.on
B.with
C.at
D.by