__he works hard,__ he can't catch up with othersA but;althoughB although;butC although;/D because;but

问题描述:

__he works hard,__ he can't catch up with others
A but;although
B although;but
C although;/
D because;but

选C

C 没难度不解释

选C,英语中的连词不像中文,although 和but 不能同时出现。

C 虽然。。。但是 有although就不用but;有but就不用although

选 C
Althouth he works hard,he can't catch up with others.
虽然你努力工作(学习),但是他还是赶不上别人.

C BUT 和although不能同时使用,在加上句子的含义:虽然他工作努力,但是能然跟不上其他人,顾选C