问题
选择题
| My parents and I have come back from our hometown. |
A. ever B. never C. just D. often |
答案
答案：C
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| My parents and I have come back from our hometown. |
A. ever B. never C. just D. often |
答案：C
缺失，余留牙正常，咬合关系良好，要求烤瓷桥修复。经基牙预备后比色。