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?nèi)匀焕^續(xù)工作。although 雖然，盡管，引導(dǎo)讓步狀語從句，不與but 連用。A選項(xiàng)不符合題意。故選C。
考點(diǎn)：考查連詞。