摘要： Scientists found many stones with numbers on the mountains. A. marking B. marked C. being marked D. have been marked
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Scientists found many stones ________ with numbers on the mountains.
A. marking B. marked C. being marked D. have been marked
查看习题详情和答案>>Scientists found many stones ________ with numbers on the mountains.
|
A．marking |
B．marked |
C．being marked |
D．have been marked |
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