he was tired he didn’t stop.A. Although ; but; to restB. /; but; to workC. Although;/; res

问题补充：

he was tired,he didn’t stop.

A. Although ; but; to rest

B. /; but; to work

C. Although;/; rest

D. Although;/; working

答案：

A. Although ; but; to rest

B. /; but; to work

C. Although;/; rest

(答案→)D. Although;/; working

解析：although和but都表示转折.在一个句子中but,although一般是不可以连用的,although本身就可表示“虽然……但是”的含义;but放在句中，although放在句首.句意:虽然 他累了，但是他不肯停止工作。Stop后接动名词表示停下正在做的工作。故选D。