问题
选择题
---My sister Sally had a bad cold. __________, she went to work as usual.
---She should go to see a doctor.
A．Though
B．Although
C．Because
D．However
答案
答案：D
题目分析：A、Though 尽管，虽然；B、Although尽管；C、Because因为 ；D、However然而；根据语境可知表示转折关系。句意 ：----我的妹妹萨里感冒了，然而她还照常去工作---她应该去看医生。根据题意故选D