问题
选择题
They still go on working, ________ they feel tired.
A．for
B．although
C．because
D．but
答案
答案：B
题目分析：句意：虽然他们累了，（但是）他们仍然坚持工作。根据句意，此句是让步状语从句，应填although.故选B。
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They still go on working, ________ they feel tired.
A．for
B．although
C．because
D．but
答案：B
题目分析：句意：虽然他们累了，（但是）他们仍然坚持工作。根据句意，此句是让步状语从句，应填although.故选B。