单项选择题

My postcard is still on the desk. Why ______ you ______ it

A．haven't; posted


B．didn't; post
C．wasn't; posting


D．won't; post
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单项选择题
从课程功能的角度，可以把课程分为工具性课程、知识性课程、技能性课程和( )。
A．程序性课程
B．练习性课程
C．地方性课程
D．实践性课程
单项选择题
It's reported that a plane with five people______crashed into the mountain several days ago.
A. on board
B. on the board
C. in board

D. in the board
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