beomgu_choi

1. I don't know if I will find this book, but if I buy it, it will be a good birthday present for my friend. (if) 2. Does he know when they will go on the excursion? (when) 3. I'll give this book to you when I finish reading it. (when) 4. Will you go to the skating rink if he asks you to? (if) 5. We don't know when she will come to us, but when she comes, we'll invite her to the party. (when)