Dried leaves continue to hang on the branches of some trees ___

Dried leaves continue to hang on the branches of some trees _____ the new leaves appear.
A、until
B、that
C、by
D、from
【正确答案】：A
【题目解析】：原文句意思为：干叶子一直挂在树上，_____新叶子长出来。A 直到，B that 起连接作用，没有实义，C By 通过，D. from 从。只有A 最符合题意。
干叶子一直挂在树上，直到新叶子长出来。