改错：(2019·洛阳统考)Shekeptonturningbacktoseemeunlesswecouldn...

问题详情：

改错：(2019·洛阳统考)She kept on turning back to see me unless we couldn't see each other any longer.

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【回答】

unless→until/till　until/till “直到”，引导时间状语从句。

知识点：完成句子

题型：短文改错