问题补充：
Our physics teacher and English teacher always give their lessons in a lively and clear way, greatly benefits us students.
A. from which
B. in which
C. that
D. which
答案：
A. from which
B. in which
C. that
(答案→)D. which
解析：句意：我们的物理老师和英语老师总是以一种非常生动和清晰的方式给我们上课，这样让我们学生非常受益。which 引导非限制性定语从句，在句中作主语，故选D
