Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
He was not able to define the process by which the body had protected by the immunologic system.
A.had protected
B.to define
C.by which
D.was not

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Jane’s friends insist that she will stay at their house when she visits Toronto next weekend.
A.will stay
B.at
C.visits
D.next weekend

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Fred Astaire is said to have been the most popular dancer of his time, but he was also a talented actor, a singer, and choreographer.
A.is said
B.to have been
C.of his time
D.a singer

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
When a country in an early stage of development, investments in fixed capital are vital.
A.country in
B.investments
C.fixed
D.are vital

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
It is advisable that students, who are not good at math, not require to take advanced math in high school.
A.that
B.who
C.not require
D.in

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
I find that necessary to do something about traffic problem in our city.
A.that
B.to do
C.about
D.in

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
It was in 1896 in Athens, Greece where the first modern Olympics were held.
A.It
B.in 1896
C.where
D.were

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
As a child grows on, its physical health is affected by many elements in the air, water and food.
A.is affected
B.on
C.by
D.many elements

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
One of the keys to the survival of animals is its ability to adapt to changes in the environment.
A.the keys
B.animals
C.adapt to
D.its ability

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
An ambitious person is committed to improve his or her status at work.
A.is
B.improve
C.status
D.at