Question

________the workers were quite tired, _______ they still went on working.
A. Because; /                  B. Although; but           C. Although; /

Answer 1

C

解析試題分析：雖然工人們都很累了，但他們仍然繼續工作。although 雖然，盡管，引導讓步狀語從句，不與but 連用。A選項不符合題意。故選C。
考點：考查連詞。