21. Prices get .................. A. high and high B. highest and highest C. more and more high D. higher and higher 22. The more manufacturers advise, .................. they sell. A. the most products B. the products more C. the more products D. most products 23. ................. a car is ................. it is. A. The more expensive/ the comfortabler B. The most expensive/ the most comfortable C. The more expensive/ the more comfortable D. The less expensive/ the more comfortable 24. Of the five students. Mary is ................. A. more intelligent B. the more intelligent C. most intelligent D. the most intelligent 25. Steel is ................ than wood. A. more heavy B. as heavy C. heavier D. more heavier 26. A super market is …………………… a shopping center. A. less convenient as B. less convenient than C. not so convenient than D. the most convenient as 27. Viet Nam becomes …………………… to foreign tourists. A. more and most attractive B. the more attractive C. much and more attractive D. more and more attractive 28. This car is …………………… than mine. A. less expensive B. as expensive C. expensive D. not so expensive 29. Tim’s grades are …………………… than John. A. worse B. worst C. as bad D. so bad 30. The …………………… we start, the sooner we will be back. A. early B. earliest C. earlier D. more early V/Viếtlạicâusửdụng so sánhkép: 1. He learns more. He becomes smarter. 2. The wind is strong. The rain is big. 3. Hể reads a lot. He knows a lot. 4. She eats a lot. She becomes fat. 5. He plays video games a lot, He is stupid. 6. She sleeps a lot. She becomes lazy.