A
当“more than + one + 单数名词”作主语时,谓语动词用单数.如 More than one person has passed the exam.
希望我的回答能够帮到你,More than two weeks _ since the foreign friends came here.A.passed B.has passed C.have passedb一段时间，视作整体，用单数。since 前边的主句用现在完成时。