EXERCISE 3I. CHỌN TỪ/ CỤM TỪ THÍCH HỢP (ỨNG VỚI A, B, C, D) ĐỂ HỊAN TH...

15. He was the first man to reach the top of the mountain.KEY TO GERUNDI. 1. making 2. shedding 3. buying 4. building 5. listening