天空有许多云,我觉得要下雨了.There are a lot of clouds in the sky.I think it_____ _____ _____rain.

问题描述:

天空有许多云,我觉得要下雨了.There are a lot of clouds in the sky.I think it_____ _____ _____rain.

is going to,有迹象要发生的事 用be going to +不定式,表示将来.