friendly,cheap,big ,popular ,good 的,过去式,*,比较级

问题描述:

friendly,cheap,big ,popular ,good 的,过去式,*,比较级

格式:单词-*,比较级.这5个单词都没有过去式.
friendly-most friendly,more friendly
cheap-cheapest,cheaper
big-biggest,bigger
popular-most popular,more popular
good- best,better