Помогите, пожалуйста, надобно ответить на письмо, предположительно таковой же объем обязан

Помогите, пожалуйста, надо ответить на письмо, предположительно таковой же объем обязан быть. Безотлагательно надо.

Now that school and football practice are over i have plenty of time to throw a big party! I'm having it on friday 20th june but i've asked my mum it my friends can stay the night so we can hang out the next day too! Please say you're coming! i know you haven't met my friends but i'm sure you'll all get on like a house on fire. i'll try to get the new Rihanna CD for the party but it's selling like hotcakes and i don't know if i can find it. It doesn't matter thought. You are coming right? You can't turn down this great chance to meet new people and have lots of fun!