Find a mistake in the four underlined parts of the sentence and correct it:
Air tickets which have been bought by customers during the sale cannot exchange.
A. which
B. been bought
C. during
D. cannot exchange

Find a mistake in the four underlined parts of the sentence and correct it:
Far more money is being spent on food than spent ten years ago.
A. Far more
B. is being
C. on food
D. spent

Find a mistake in the four underlined parts of the sentence and correct it:
After Newton has observed an apple fall to the ground, he formulated the law of gravity.
A. has observed
B. fall
C. the ground
D. formulated

Find a mistake in the four underlined parts of the sentence and correct it:
If your soccer team will win the championship tomorrow, we will have a big celebration for
you.
A. soccer
B. will win
C. championship
D. will have

Find a mistake in the four underlined parts of the sentence and correct it:
John was arrested for speeding, it unfortunately was reported in the local newspaper.
A. was
B. for
C. it
D. was reported

Find a mistake in the four underlined parts of the sentence and correct it:
A game is divided into quarters ranging from five to eight minutes in long.
A. is divided
B. ranging
C. to
D. in long

Find a mistake in the four underlined parts of the sentence and correct it:
You would have seen my garden at its best if you were here last week.
A. would have
B. at
C. best
D. were

Find a mistake in the four underlined parts of the sentence and correct it:
She told me to read it for myself if I didn’t believe what he says.
A. to read
B. myself
C. didn’t believe
D. says

Find a mistake in the four underlined parts of the sentence and correct it:
Economic reforms started since 1986 in Vietnam have helped millions of people to be out of poverty and bringing the poverty rate down.
A. started
B. have helped
C. out of
D. bringing

Find a mistake in the four underlined parts of the sentence and correct it:
Maria is not a citizen of the United States, so she has to pay income taxes anyway.
A. a citizen of
B. so
C. to pay
D. anyway