问题补充：
It’s really a pity that the heavy rain to go for a picnic.
A. made it impossible for us
B. made that impossible for us
C. made us impossible
D. made it impossible of us
答案：
(答案→)A. made it impossible for us
B. made that impossible for us
C. made us impossible
D. made it impossible of us
解析：考查句型：make it +adj+for sb to do，it是形式主语，不定式是真正的主语，句意：真遗憾大雨使我不可能去野餐。选A。
