your backage_____ here until you come back,so enjoy shopping here.A will be kept B has been kept

问题描述:

your backage_____ here until you come back,so enjoy shopping here.A will be kept B has been kept
until用在从句中,从句前后时态应该一致.虽然我也觉得好像应该选A ,但是从句后面是一般现在时,前面为什么不选B,用现在完成时呢?

A,看后一句意思,是说你去好好享受购物吧,是还没去,所以前边不能使完成时