"WHY DON'T YOU PARTICIPATE IN THE VOLUNTEER WORK IN SUMME...

Câu 20. "Why don't you participate in the volunteer work in summer?", said Sophie. A. Sophie asked me why not participate in the volunteer work in summer. B. Sophie made me participate in the volunteer work in summer. C. Sophie suggested my participating in the volunteer work in summer. D. Sophie suggested me to participate in the volunteer work in summer.