Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Câu hỏi

They have ________ some research on the impact of single-use plastic on the environment.

A. put on

B. carried out

C. brought in

D. turned up

Đáp án
B. carried out

Câu hỏi thuộc Bài tập:

ĐỀ SỐ 20 - VŨ MAI PHƯƠNG