The library book ___(return) until yesterday.

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The library book ___(return) until yesterday.
The library book ___(return) until yesterday.

The library book ___(return) until yesterday.
wasn't returned
或:
hadn't been returned
不明白的欢迎再问!请记得采纳,

was't returned, 图书馆的书昨天才还回去。

not.. until..直到...才...
yesterday, 过去时间, 所以整个句子要用过去式