Declining Invitation

　　I am not quite sure whether I am free.

　　I am not sure.

　　It depends.

　　Maybe. Maybe not.

　　It looks as if I am not free tonight.

　　I am not free at all.

　　I am just remember that I have got another appointment.

　　Sorry .I am afraid I can not go to the theatre tonight.

　　I am away tonight.

　　Sorry I can not .I have got a terrible toothache now.

　　I am really a little bit busy for the next few weeks.

　　I will give you a ring one of these days .

　　I would love to ,but I am afraid I will be quite busy then.

　　I will come round to other place.

　　I am afraid I am busy on Sunday.

　　It might be a little early.

　　That is difficult for me.

　　I have to visit  a friend tonight.

　　Thanks for the offer, but I am afraid I have an essay to finish.

　　It is very kind of you to invite ,but I am afraid I am busy tonight.

　　Well , tonight is not really convenient¹ .How about next Friday?

　　I would love to , but I do not suppose I have time.

　　It is very nice of you to ask, but honestly, I really would not be able to.

　　It is very kind of you to invite me, but I have got a previous engagement².

　　I would love to go ,but I do not think my husband will make it as he's schedule d to leave for a conference³ the day before the occasion⁴.

　　I regret we are unable to accept your kind invitation.

　　You know I could not possibly make it as I will be away on a business trip in New York.

　　You know I have already been asked to join my family for the weekend.

　　It is unlike⁵ we will be back before the day you suggested .In view of this ,we are unable to accept your invitation.