We have gathered nearly 100,000 quilts, up to half have gone to the flood-hit areas.
A. of which
B. in which
C. with which
D. for which
网友回答
(答案→)A. of which
B. in which
C. with which
D. for which
解析：
这题考查定语从句中“介词+which”的用法，句意是：我们收集了近100，000床被子，其中有一半已经去了洪水泛滥地区。选A。