— Tom, did Mr. Li join you in your discussion?

— No, he _____, but he happened to have fallen ill.

A．would like to

B．will

C．was to have

D．was going to join

有人认为，中国古代君主专制理论由先秦法家奠定，经汉朝儒生发展而成。这两个阶段的代表人物分别是（）

A.荀子、董仲舒

B.韩非子、董仲舒

C.商鞅、孟子

D.荀子、孟子