问题描述： They must stay at the cages ,so they can't be____ 1个回答 分类：英语 2014-12-05 问题解答： 我来补答 They must stay at the cages, so they can't be ______ . 译文：他们必须呆在笼子里,所以他们不可能会快乐的. 应填：happy（心情愉悦的；高兴的） 展开全文阅读
