问题补充：
－Eric is ill in hospital. He can’t come to your party today. －
A. I don’t think so
B. It doesn’t matter
C. I’m sorry to hear that
D. That’s not a good idea
答案：
A. I don’t think so
B. It doesn’t matter
(答案→)C. I’m sorry to hear that
D. That’s not a good idea
解析：I don’t think so我不这样认为；It doesn’t matter没关系；I’m sorry to hear that很遗憾听到这个消息；That’s not a good idea这可不是一个好主意。句意：艾瑞克生病住院了。他今天不能来参加你的聚会了。结合语境可知选C为最佳答案。
