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.
We are working, that (A) means that we are contributing (B) goods and services (C) to (D) our society.
A. that
B. are contributing
C. services
D. to
Đáp án : A
“that” -> which. “that” không bao giờ được dùng sau dấu phảy. “which” thay thế cho cả vế phía trước dấu phảy