----He was tired he fell asleep as soon as he lay down. -------­­­­&s

问题补充：

------He was tired he fell asleep as soon as he lay down.

-------­­­­­­­Oh ,we can go out and let him have a good rest.

A. too ,to

B. so, that

C. enough ,to

D. such ,that

答案：

A. too ,to

(答案→)B. so, that

C. enough ,to

D. such ,that

解析：考查句型：so+形容词或副词+that从句，表示如此…以至于…引导结果状语从句。句意：他如此的累以至于他一躺下就睡着了。所以选B。