The library is ( ) 10 hours ago ,it ( ) at 9.00 in the morning A.open ,openB,opened ,openC.opened ,openedD.open ,opened

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The library is ( ) 10 hours ago ,it ( ) at 9.00 in the morning A.open ,openB,opened ,openC.opened ,openedD.open ,opened
The library is ( ) 10 hours ago ,it ( ) at 9.00 in the morning
A.open ,open
B,opened ,open
C.opened ,opened
D.open ,opened

The library is ( ) 10 hours ago ,it ( ) at 9.00 in the morning A.open ,openB,opened ,openC.opened ,openedD.open ,opened
B
因为前半句是被动句 即图书馆10小时前被开放
后半句是规定性时间表 长期遵循的 用一般时

要我说没正确答案,后边的空应该用opens