This bag is 90 yuan.That bag is 70 yuan(改为同义句)

more cheap
再问： 如果那名游泳者在比赛中能赢,我们就会选择他。
If that ___ can win in the ___, we will___him.
在那次测试后,他体重减了很多
After the___, he lost a lot of___
这本书比那本有趣,但它不是最有趣的
This book is ___ ___ than that one, but it is not the ___ ___.
再答： swimmer， competition ，choosetest，weightmore interesting  ，best one