如今，许多情侣未婚同居。
Nowadays, many couples ___live ___together without being married.
在一些文化中，伴侣婚前同居很常见。
In some cultures, it's common for partners to ___live ___together before marriage.
他们在分手前同居了三年。
They ___lived ___together for three years before separating.
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