题目内容
【题目】__________ he was very tired, he continued working in his office.
A.Because
B.Since
C.Although
【答案】C
【解析】句意：他虽然很累了，但是还继续在办公室里工作。A. Because因为，表示原因；B. Since既然，表示条件；自从，表示时间；C. Although虽然，表示条件。虽然累，但是在坚持工作。故选C。
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题目内容
【题目】__________ he was very tired, he continued working in his office.
A.Because
B.Since
C.Although
【答案】C
【解析】句意：他虽然很累了，但是还继续在办公室里工作。A. Because因为，表示原因；B. Since既然，表示条件；自从，表示时间；C. Although虽然，表示条件。虽然累，但是在坚持工作。故选C。