I would need the sentences so I could help you.
The only way ti learn a lesson is to be forced to experience the consequences
It is actually the 8th. it is the smallest planet in the solar system. Hope this helps
The second sentence, "I love vanilla ice cream, but my sister likes butter pecan," has the correct punctuation. In a compound sentence, the comma always goes before the coordinating conjunction (In your case, this conjunction was "but.").
