To save class time our teacher has students do half of the exercises in class and compl

问题补充：

To save class time, our teacher has students do half of the exercises in class and complete the other half for our homework.

A. us

B. we

C. our

D. ours

答案：

(答案→)A. us

B. we

C. our

D. ours

解析：因为是用作动词has的宾语，所以要用宾格代词us。全句意为：为了节约课堂时间，我们的老师要求我们学生在课堂上做一半练习，剩下的一半在课后作为家庭作业完成。