首页 › 答案 › 题库 › 知到智慧树 › 未分类

The traditional goal of science is to discover how things are， not how they ought（）.

The traditional goal of science is to discover how things are， not how they ought（）.
A.have been
B.be
C.to be
D.to
正确答案：to be

标签：科技英语语法

上一条：The boy wanted to ride his bike in the street， but his mother told him（）.

下一条：Tom wanted to play football with his friends in the street， but his father told him（）.