问题
选择题
It was not long before the water _____ cold.
A．is feeling
B．feels
C．felt
D．was feeling
答案
答案：C
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It was not long before the water _____ cold.
A．is feeling
B．feels
C．felt
D．was feeling
答案：C
因外伤冠折，要求修复，查见残根，断面在牙槽嵴以上，已行根管治疗术，无松动，无叩痛，余留牙正常