We could have to walk to the station; it was so near.—Yes.A taxi ______ at all necessary.A．wasn’t B．hadn’t been C．wouldn
问题描述：
We could have to walk to the station; it was so near.—Yes.A taxi ______ at all necessary.A．wasn’t B．hadn’t been C．wouldn’t be D．won’t be 应该选哪个,为什么?
答
d
是一般时的嘛