这道题为什么不能选a呢?If it rains for three more days,it ----- for a month without a break.A will rainB will have been raining

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这道题为什么不能选a呢?Ifitrainsforthreemoredays,it-----foramonthwithoutabreak.AwillrainBwillhavebeenraining这道题

这道题为什么不能选a呢?If it rains for three more days,it ----- for a month without a break.A will rainB will have been raining
这道题为什么不能选a呢?
If it rains for three more days,it ----- for a month without a break.
A will rain
B will have been raining

这道题为什么不能选a呢?If it rains for three more days,it ----- for a month without a break.A will rainB will have been raining
再下三天的话,雨就连下一个月了.
表示已经完成的状态,当然要选B

选A是还要下一个月才会停!肯定不对!!!^0^