He couldn't find his bike___ the policeman's help. Awith Bwithout 求讲解
问题描述：
He couldn't find his bike___ the policeman's help. Awith Bwithout 求讲解
答
without
因为前面是couldn't所以意思是他找不到他的自行车
如果是with则是有了警察的帮助他找不到他的自行车,意思不通
若是without则是没有警察的帮助他找不到他的自行车,意思通顺
所以选B.without