Complete the story Mr. Agarwal was …

Mr. Agrawal was a very wealthy businessman. One day he was alone sitting at his dinning table when the door bell rang. He called out to his servant to check who was at the door but the servant did not turn up. The doorbell rang again and Mr. Agarwal stood up to check himself. When he openend the door, there was nobody there but somebody had left a note for him. He shouted,"Hello, is anybody there?" but there was no response. He took the note and started walking back towards the dining table. He had not shut the door behind him. As soon as he opened the note and read the words, happy birthday dad, a huge group of people shouted,"Surprise!" behin him. He was startled for a second and then realised that his children had come home after two long years to surprise him and his servant had been involved in the plan. Regards