I'd rather you ---- too many people .

would rather sb+。。。表示“宁愿。。。”时,用虚拟语气：对现在的情况虚拟,用过去式；对过去情况的虚拟,用过去完成时此句,是说现在的情况,你邀请了这么多的人,所以用其过去式did形式换个句子：I'd rather you ____ too many people last Sunsday。 就用B