18. bad; worse; worst
19. kindest
20. most friendly
21. more expensive
22. bigger; smaller
23. longest
24. more beautiful
18、bad worse worst
19、kindest
20、most friendly
21、more expensive
22、bigger smaller
23、longest()此处长江应该写成Yangtze River
24、more beautiful
bad worse worst
kind
friendly
expensive
big small
longest
beautiful
18.bad :worse;worst 19.kindest 20 most friendly 21 more expensive 22 bigger: smaller 23.longest 24 more beautiful.
建议你还是多看看英语语法书会比较好~