Which contains a sentence error?

Although Milo saved all his money from summer jobs, he and his brother haven't gotten that motorcycle yet.

Milo saved all his money from summer jobs. He and his brother haven't gotten that motorcycle yet.

Milo saved all his money from summer jobs, he and his brother haven't gotten that motorcycle yet.

Milo saved all his money from summer jobs, but he and his brother haven't gotten that motorcycle yet.

Question

Which contains a sentence error?

    Although Milo saved all his money from summer jobs, he and his brother haven't gotten that motorcycle yet.

    Milo saved all his money from summer jobs. He and his brother haven't gotten that motorcycle yet.

    Milo saved all his money from summer jobs, he and his brother haven't gotten that motorcycle yet.

    Milo saved all his money from summer jobs, but he and his brother haven't gotten that motorcycle yet.

anonymous · Answer

Which one doesn't sound right to you?

anonymous · Answer

If you were writing, which way would you least likely use?

anonymous · Answer

2nd and 3rd don't sound right to me.

anonymous · Answer

Which of those would you most likely use?

anonymous · Answer

3rd o-o

anonymous · Answer

Good :D

anonymous · Answer

3rd has an error so you are correct :D I must sleep now so goodbye!!