Chọn A
Câu đề bài: Trước khi máy tia hột bông được sáng chế ra năm 1974, các nông dân Mĩ đã dùng sáp rẻ tiền để lấy hạt ra khỏi các sợi bông.
à Trong câu có 2 mệnh đề thời gian trước sau (có từ Before), mệnh đề ngay sau before sẽ xảy ra trước, nên mệnh đề còn lại được chia lùi thì.
Thay bằng: was invented.
Before the cotton gin A. had been invented in 1794, American famers B. had cheap C. salves remove seeds D. from the cotton fiber.
A. had been invented
B. had
C. salves
D. from
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction (from 30 to 34)
The tree that was struck by (A) lightning had been (B) the tallest of (C) the two trees we had (D) in the yard
A. struck by
B. had been
C. the tallest of
D. had
Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
Had I been interested in that subject, I would try to learn more about it.
A. Had I
B. in
C. try to learn
D. about
* Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
When I got to the cinema Jack had been waiting for me.
A. to
B. the
C. had been
D. for
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions
When I got to the cinema Jack had been waiting for me
A. to
B. the
C. had been
D. for
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
When I got to the cinema Jack had been waiting for me.
A. to
B. the
C. had been
D. for
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.
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.
Hardly he had graduated from Vietnam Naval Academy when he joined Vietnam Coast Guard.
A. he had
B. graduated from
C. when
D. joined
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.
(A) What happened in that town (B) were a reaction from some people, (C) including firemen and policemen who had been laid off from (D) their jobs.
A. What happened
B. were
C. including
D. their
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.
What happened in that city were a reaction from city workers, including firemen and policemen who had been laid off from their jobs.
A. What happened
B. were
C. including
D. their