《宋书·志·卷十七》
还没有选立后嗣之前，通常由国上卿主祭。
未立后之前，常使国上卿主祭。
Before choosing a successor, the chief counsellor of the country usually presides over the sacrifice.
<s>[INST] 将以下英文转换为文言文: Before choosing a successor, the chief counsellor of the country usually presides over the sacrifice. [/INST] 未立后之前，常使国上卿主祭。</s>
将以下英文转换为文言文: Before choosing a successor, the chief counsellor of the country usually presides over the sacrifice.
user
未立后之前，常使国上卿主祭。
assistant