Student or Learner
1- I painted the house until 5. Then I went home.
2- I painted the house until 5 and then I went home.
3- I painted the house until 5. I went home then.
If I am not wrong, sentences 1 and 2 are OK. But I cannot make sure if the last one is OK or not. Will you please tell me if it is OK or not?
All are acceptable.