Look at those black clouds.It___rain Awill B would C will D is going to

问题描述:

Look at those black clouds.It___rain Awill B would C will D is going to
为什么B,C,D一个意思却选D?

be going to可以用以表示某人打算做某事;will则用以叙述某件将要发生之事.前者含有主观意愿;后者只是客观的叙述.句中的将会下雨是说话人看到乌云之后做出的判断,所以选D.