问题
选择题
Daniel prefers staying at home to ______ swimming. [ ]
A. go
B. goes
C. going
D. went
答案
答案：C
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Daniel prefers staying at home to ______ swimming. [ ]
A. go
B. goes
C. going
D. went
答案：C
缺失，患者要求做可摘局部义齿修复。设计为
上放置间隙卡环
人工牙的根据是（）