The light, which otherwise______the invalid, was excluded from his chamber by means of shutters. A.disturbed B.had disturbed C.would have disturbed D.must have disturbed
A. A.disturbed B.had B.would C.must
【参考答案】
C 句中otherwise一词隐含虚拟条件,表示转折假设:光线被百叶窗挡住了,否则的话,就会打搅病人,暗含'如果不用百叶窗挡住光线,病人就会受到打扰'之意,因此应用虚拟形式。