Sentence examples for they did to from inspiring English sources

The part of the sentence 'they did to' is not correct and usable in written English as it is incomplete
To make it complete and usable, you should add another part to it, for example "they did to the store" or "they did to help". Therefore, a complete sentence using this phrase could be "They did to the store to help the customers". This sentence would be correct and usable in written English.