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.
Câu 1: Before becoming successful, Charles Kettering, former vice president of General Motors, was so poor that he has to use the hayloft of a barn as a laboratory.
A. successful
B. so poor
C. has to
D. as
Câu 2: In an essay writing in 1779, Judith Sargeant Murray promoted the cause of women's education.
A. In an essay
B. women's education
C. the cause of
D. writing
Câu 3: Air pollution, together with littering, are causing many problems in our large, industrial cities today.
A. with
B. industrial
C. problems
D. are
A.
B.
C.
D.