What impressed me most in 2003 was the success of Shenzhou V and China’s becoming the third nation to send a man into space,        _______ all our Chinese are proud.

A. of which                              B. for which     C. of that          D. for it

（2010·山东圣泽中英文学校高三上第一次阶段测试）   32. What impressed me most in 2003 was the success of Shenzhou V and China’s becoming the third nation to send a man into space,        _______ all our Chinese are proud.

A. of which          B. for which     C. of that        D. for it