21. “How much __________ jeans?” – “ __________ fifty dollars.” * 25 điểm A. is this/ It’s B. are these / They’re C. is that/ Those are D. are those/ It’s 22. In some countries, people often leave __________ at a restaurant after eating. * 25 điểm A. a dessert B. an order C. a tip D. a menu 23. I often eat __________ apple after lunch. * 25 điểm A. a B. some C. any D. an 24. Harry’s favorite __________ is lemon cheesecake. * 25 điểm A. seafood B. vegetable C. dessert D. meal nhanh len a chi can viet dap an thoi minh toi gio nop bai roi