问题补充:
it is raining, he is still working outside.
A. Although; but
B. Although; /
C. But; although
D. /; although
答案:
A. Although; but
(答案→)B. Although; /
C. But; although
D. /; although
解析:although虽然,尽管,一般用于句首;but但是,一般用于句子中间;英语中although和but单独即可以表示转折含义,一般不搭配使用。句意:尽管正在下雨,但是他仍旧在外面工作。结合语境可知选B。