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.
That the subways are overcrowded in Manhattan it is a problem that should be c
A. That
B. It
C. Is
D. dealt with soon
Đáp án là B. bỏ it. Vì “That.... Manhattan” đã đóng vai ứò làm chủ ngữ trong câu này rồi => thừa it.