A villager, who __________last night, claimed to ________ a UFO flying across the sky. [ ]

A. had stayed up; see

B. stayed up; see

C. stayed up; have seen

D. has stayed up; have seen

我国的进出口邮包必须由寄件人填写( )向邮包寄达国家的海关申报。

A．报关单
B．报税单
C．出入境货物通知单
D．备案清单