III. Choose the best one (A, B, C or D) to complete the sentence or replace the underlined word.

Câu hỏi

Chen us that air pollution _ a serious problem in Beijing.

A. say - is

B. told - was

C. told - be

D. said - was

Đáp án
B. told - was

Câu hỏi thuộc Bài tập:

Chen ________ us that air pollution _________ a serious problem in Beijing.