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combined with or to
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Please supply the complete sentence.
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with
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Combined with Emotion: smile
 Englishmaven's reply was promoted to an answer.
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Natrium and chlorine are combined to make salt.
Natrium is combined with chlorine to make salt.
Good examples

The offer is combined for the availability

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Re "combined with or combined to" please consider the following example:
"The powder was homogenized by producing experimental gels with different stock gels, before combining them with ? / to ? a commercial agent."