be glad to do sth.was glad to take them out of the dust and eat them.是不是这样用的
问题描述：
be glad to do sth.
was glad to take them out of the dust and eat them.是不是这样用的
答
be glad to do sth：很高兴做某事
答
用法是对的
be glad to do
乐于做…；高兴做某事