英语的选择正确的形式填空
____ （Drift) from one subject to another ,the coversation seemed endless .这空是填过去分词Driften还是现在分词Drifting,还有这样的理由哦
_____ (contact) b y a relative of john ,the doctor hurried to john's house 答案是什么,还有理由,是那个Having been contacted