by the time l reached home my brother --- to worka\ wentb\ has gonec\ had goned was gone为什么答案是c理由越详细越好,好的有赏

Just then,he heard short,quick steps closely behind him.By the time he reache l will be ready by the time the taxi by the time ,by then By the time by the time l rode into history by winning the race for a record sixth time .为什么用by?time为什么不是times By the time l went to bed last night,Tom▁▁asleep.(fall) When time goes by can l fly when l read books,time goes by ( ) 用by the time造句! by the time怎么造句? by the time +现在式造句 by the time 的用法 by the time 等于什么? by the time to 谢 by the time什么意思 well .l overslept.by the time l got up.my mother had gone to wor问句是什么? By 12 o'clock 可以用　by the time of 12 o'clock吗?因为 by the time of last term 就可以说出成by l就可以说成by last term!我想知道by 后面加时间的时候可不可以酱紫?by the time of her death 等于 by her death 是不是