My mother is ________ in her use of gas when cooking.Đoạn văn7/96SECTION II: LEXICO – GRAMMAR (7.0 POINTS) Part 1: Questions from 16 to 35. (3.0 points - 0.15/ each) Choose the best answer to each question. My mother is ________ in her use of gas when cooking. economized economizing economical economicGiải thíchChọn đáp án C