题目内容
________ more careful, his ship would not have sunk.
| A.If the captain were | B.Had the captain been |
| C.Should the captain be | D.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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