Everyone seems so sad when they say goodbye to each other 对划线部分提问划线部分为：so sad.
问题描述：
Everyone seems so sad when they say goodbye to each other 对划线部分提问划线部分为：so sad.
Most of the student exercise for less than two hours every day.对划线部分提问划线部分为：for less than two hours .
答
1.How does everyone seem when they say goodbye to each other?
2.How long do most of the student exercise every day?