Some people never know what they need ______ they lose it.A. until
题型：不详难度：来源：
Some people never know what they need ______ they lose it.
A. until B. as C. after |
答案
| A |
解析
试题分析：until直到，as当，after在……之后，句意：一些人直到丢失了什么才知道他们需要什么。故选A。 |
举一反三
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