Question

[Lê Quỳnh Anh]

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.

Air pollution, together (A) with littering, (B) are causing (C) many problems (D)

A. with

B. are

C. many

D. problems 

Answer 1

[Dương Hoàn Anh]

B                                                                                                                                  

B “are” => “is” vì chủ ngữ chính là “air pollution”- danh từ không đếm được