Question

      we were quite tired,        we still went on working.
A．Because; /           B．Although; but            C．Although; /

Answer 1

C

試題分析：句意:雖然我們很累了，但是我們仍然繼續工作。because 表示原因，意思是因為，在這里不符合句意。although 雖然，引導讓步狀語從句，不能和but 連用，故B不對；選C。