1. Some people become _______. A. richer and richer B. richest and richest C. more and more rich D. more rich and richer 2. The tests are _______. A. more difficult and difficult B. more and more difficult C. more difficult and more difficult D. more difficult 3. Life in the modern world is becoming _______. A. more complex B. complexer and complexer C. more complex and complex D. more and more complex 4. Because he was afraid, he walked _______. A. farther and farther B. faster and faster C. more and more fast D. more faster and faster 5. The living standard is getting _______. A. gooder and gooder B. more and more well C. better and better D. more better 6. The _______ you study, the more you will learn. A. hardest B. harder C. most D. much

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