解题思路： 两者比较用比较级 比较级通常是在词尾加er
解题过程：
1 older 2 younger 3 Does better 4 bigger hers 5 heavier 6 earlier 7 slow slower 8 much 9 older fat 10 younger 11 thinner 12 bigger 13 long 14 jumps higher 15 Does better 16 tall 17 bigger hers 18 heavier 19 earlier 20 Do earlier don’t
