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

Many high school students take part in voluntary work, _________ to bettering the community.

A. contributing

B. to contribute

C. is contributed

D. contributed

Đáp án
A. contributing

Câu hỏi thuộc Bài tập:

ĐỀ SỐ 14 - VŨ MAI PHƯƠNG