摘要： After half a year's training, they were made entirely used underwater. A. stay B. to stay C. to staying D. staying
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After half a year's training, they were made entirely used ______ underwater.
A. stay B. to stay C. to staying D. staying
查看习题详情和答案>>After half a year’s training , they were made entirely used underwater .
A．stay B．to stay C．to staying D．staying
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