1. Air pollution is getting______ serious in big cities in the world. A. More and more C. The more and the more B. The most and the most D. Most and most 2. _____ employees in the postal service have meant slower service in the last three years. A. Few B. Fewer C. Less D. Least 3. Join paid $20 for his meal, _____ he has thought it would cost. A. Less as B. Not so many as C. Not so much as D. Not much as 4. The _______you encounter failure, the more confident you are. A. More frequently B. More frequent D. As frequently D. Most frequent 5. Looking after a kitten is______ more difficult than I thought it would be. A. Far B. Farther C. Further D. Father Đáp án: 1. A (so sánh kép) ngày càng như thế nào. 2. B mẹo nhìn phía sau có slower. 3. C (so sánh không bằng) 4. A (so sánh kép) 5. A (so sánh hơn thêm far để nhấn mạnh)
