It is ______ to examine these questions carefully by doing more group discussions.选项:a、worthy
问题描述：
It is ______ to examine these questions carefully by doing more group discussions.选项:a、worthy
答
不知道为什么只有一个选项,不过我认为这里应该填worthwhile,it is worthwhile to do 或it is worthwhile doing 是固定用法.be worth doing ,be worthy of doing,没有be worthy to do的用法