The whole building _____ burned down, but the heavy rain _____.A．might have; wou

题型：不详难度：来源：

The whole building _____ burned down, but the heavy rain _____.

A．might have; would help	B．could have been; helped	C．must have; helped
D．should have been; was helping

答案

B

解析

本题前半部分是虚拟，“本来会烧毁的”，后半部分是陈述语气，表示实际情况，而且是过去发生的事情，用could +现在完成时和过去时。