It was bad weather they all had to stay at home.A. such a thatB. such; thatC. so; thatD.

问题补充：

It was bad weather they all had to stay at home.

A. such a, that

B. such; that

C. so; that

D. so; to

答案：

A. such a, that

(答案→)B. such; that

C. so; that

D. so; to

解析：such; that和so; that都表示如此……以至于，区别在于，such是形容词，修饰名词，意思是如此的这样的；so是副词，修饰形容词，副词，意思是如此这样。句意：这是如此糟糕的天气，以至于他们都不得不呆在家。bad weather中心词是名词weather，故选B。