1. Thanks for thinking me, but I have to pass this time.=1. Thanks for thinking of me, but I have to pass this time.
2. I appreciate the invitation, but I have other plans.= 2. I appreciate the invitation, but I have other plans
3. Thanks you for offer, but I won`t be able to.         =3. Thank you for the offer, but I won`t be able to.
4. That sounds gut, but I`m available                        =.4. That sounds gut, but I`m available    
5. I`m really sorry, I can`t do this.                                =5. I`m sorry, I can`t do this.