The course about Chinese food attracts over 100 students per year up to half are from ov

问题补充：

The course about Chinese food attracts over 100 students per year, up to half are from overseas.

A. in which

B. for whom

C. with which

D. of whom

答案：

A. in which

B. for whom

C. with which

(答案→)D. of whom

解析：考查定语从句。of表示“……的一部分”，关系代词whom指代100 students，在从句中作介词of的宾语。句意：这门关于中国饮食的课程每年都吸引100多个学生，其中一半是留学生。故D正确。