p13:
2.better best
3.happier happiest
4.more interesting most interesting
5.lager lagest
6.smarter smartest
7.thinner thinnest
p14
before after
2.the tallest
3.heavier
4.the heaviest
5.the slowest
6.the fastest
7.more beautiful
8.the most beautiful
9.better the best
p15
as interesting as not as interesting as as interesting as not as dangerous as
as dangerous as less dangerous than
p16
A1
第2、4、5、7个空
A2
kind listen problems happy
p17
A3
sing happy singer popular tavel
磁带内容爱莫能助,我不是老湿,我没有教师用书
答案正确度可靠,出自本人英语书,如有质疑参见偶滴年级第一证书