It was that they went for a walk in the park.
A. such a fine weather
B. so fine a weather
C. such fine weather
D. so fine weather
网友回答
A. such a fine weather
B. so fine a weather
(答案→)C. such fine weather
D. so fine weather
解析：考查特殊句式。So+adj+a/an+名词=such+a/an+adj+名词；但是本题的weather是一个不可数名词，不能用a/an修饰。句意：天气是如此之好，以至于他们去公园散步了。故C正确。