A: Julie looks so slim. B: Has she been dieting? A: Not that I am aware of. B: Well, she ________ very hard then. She goes horse riding, doesn’t she? A. must have been exercising B. was exercising C. had better exercise D. was able to exercise 2. Would you mind ________ your cigarette smoke in my face? It’s getting on my nerves. A. not to blow B. not blow C. not blowing D. haven’t blown 3. I ________ my car last week if I had accepted James’ offer. He offered me two thousand dollars for it, but I wanted more. A. was able to sell B. may have sold C. had sold D. could have sold 4. You knew that we had to walk a long way today, so you really ________ those high heeled shoes. You only have yourself to blame for your aching feet. A. don’t have to wear B. shouldn’t have worn C. must not have worn D. might not wear TRẢ LỜI VÀ GIẢI THIK HỘ MIK LUN ĐC KO Ạ