问题
选择题
The course normally attracts 20 students per year, ________up to half will be from overseas.
A．in which
B．for whom
C．with which
D．of whom
答案
答案：D
考查介词+关系代词引导定语从句。先行词是20 students，是人，不能用which引导，排除A,C；代入定语从句________up to half will be from overseas应是up to half of the 20 students will be from overseas.所以选D。