题目内容

________ more careful, his ship would not have sunk.
A.If the captain wereB.Had the captain been
C.Should the captain beD.If the captain would have been
B
因为由主句谓语可判断,表示的是与过去事实相反的情况,所以虚拟条件句中的谓语应用过去完成时,Had the captain been =" If" the captain had been。
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