虚拟从句

题目

虚拟从句
Sometimes I have thought it would be an excellent rule to live each day as if we _____tomorrow.
A.should die B.are to die C.were dying D.must die
请问选择哪个啊?为什么?怎么翻译?

答案

A.表示对将来的虚拟,用were to或者should+动词原形.译为：有时我想,过好每一天是个非常好的习惯,似乎我们明天就会死去.