Mark the letter A, B, C or D on your...

Câu hỏi: 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.
In the United States (A) among 60 percent (B) of the space on the pages of newspapers (C) is reserved for (D) advertising.

A.among

B.of the space

C.is reserved

D.advertising