— Oh, that's just my missing pen. Where on earth was it?

— It _____ off the table into the corner. [ ]

A. has fallen

B. fell

C. falls

D. was falling

刚买车，就有保险公司发来短信；刚看房，就有装修公司来联络……在网购时代，网络信息泄露事件时有发生。这要求政府：（ ）

A．制定相关法律

B．加强市场监管

C．规范执法行为

D．完善公共服务