We have gathered nearly 100 000 quilts up to half have gone to the flood-hit areas.A. wi

问题补充：

We have gathered nearly 100,000 quilts, up to half have gone to the flood-hit areas.

A. with which

B. in which

C. for which

D. of which

答案：

A. with which

B. in which

C. for which

(答案→)D. of which

解析：which指代先行词quilts，介词of表示“部分”，定语从句的正常语序应该是up to half of which (= 100,000 quilts) have gone to the flood-hit areas。