Mark the letter A, B, C or D on your answer sheet to show the underlinedpart that needs correction in each of the following questions.
Science is the process of gathering knowledge and answering questions about the world and how works it
A. Is
B. Gathering
C. Questions
D. Works it
Đáp án là D.
works it => to work it. Sau các từ để hỏi Wh- (trừ why) ta thường dùng “to V”