问题
选择题
The day _____ I stayed with a disabled boy is never to be forgotten. [ ]
A. which
B. that
C. when
D. in which
答案
答案：C
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The day _____ I stayed with a disabled boy is never to be forgotten. [ ]
A. which
B. that
C. when
D. in which
答案：C
缺失，义齿设计：
基牙，弯制卡环，
唇侧无基托，腭侧塑料基托连接。义齿蜡型采用混装法装盒
的舌面
的近远中轴面角