Question

【题目】__________he was busy, _________he often helped us with our studies.

A. Although; but B. /; although

C. But; / D. Although; /

Answer 1

【答案】D

【解析】

试题分析：句意：虽然他很忙，但是他经常帮我们学习。Although虽然，尽管；but但是。在英语中Although和but不能搭配使用，只能用其中一个。所以选D。