摘要：15．On the table she found a piece of paper some puzzling secret codes . A．which was written ycy B．that was written C．on which were written D．on that was written
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On the table she found a piece of paper ________ some puzzling secret codes.
[ ]
A．which was written
B．that was written
C．on which were written
D．where was written
On the table she found a piece of paper ________ some puzzling secret codes.
[ ]
A．which was written
B．that was written
C．on which were written
D．on that was written
On the table she found a piece of paper ________ some puzzling secret codes.
[ ]
A．which was written
B．that was written
C．on which were written
D．where was written