VI:
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction
Trả lời câu hỏi dưới đây:
Men and women in the Peace Corps work with people in the developing countries to help them improving their living conditions.
Đáp án là C. improving => (to) improve. Cấu trúc: help someone (to) do something.