Choose the right sentence: 1. I hope our team won’t win. I hope our team will win. 2. Will you buy this book? Wiil you buy this book? 3. It’s very hot here. I’ill open the window! It’s very hot here. I’ll open the window!

1. I hope our team won't win. - This sentence is correct because it expresses a negative hope or desire for the team not to win. The word "won't" is the contraction of "will not."

2. Will you buy this book? - This sentence is correct because it is a question asking about a future action. The word "will" is used to show a future action, and there is no extra "i" in the word "will."

3. It's very hot here. I'll open the window! - This sentence is correct because it expresses a response to the hot temperature by saying "I will open the window." The contraction "I'll" is used as a shortened form of "I will."