问题描述：
what ______ another time?
There are many trees _____ both sides of the street.
为什么填?其中有固定搭配?
The hole should be big enough ______ a tree.
There are many trees _____ both sides of the street.
为什么填?其中有固定搭配?
The hole should be big enough ______ a tree.
问题解答：
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