---What does the weather forecast say?---It says a cold front ______.a.has been come b.is coming c.will be come d.would come选B.为何将来时不可?

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---Whatdoestheweatherforecastsay?---Itsaysacoldfront______.a.hasbeencomeb.iscomingc.willbecomed.woul

---What does the weather forecast say?---It says a cold front ______.a.has been come b.is coming c.will be come d.would come选B.为何将来时不可?
---What does the weather forecast say?
---It says a cold front ______.
a.has been come b.is coming c.will be come d.would come
选B.为何将来时不可?

---What does the weather forecast say?---It says a cold front ______.a.has been come b.is coming c.will be come d.would come选B.为何将来时不可?
因为 a cold front 正在来的路中,所以就是is coming .使用c,语法上也说不过去,be是动词,come也是动词,两个动词不能在一起啊.