Answer:
Here's the completed passage with the correct words chosen:
I was all alone at the house. My parents had gone to attend a wedding. At 9 p.m. there was a knock on the door. On opening the door, I found a middle-aged man with his wife and three children. Before I could recognize him and ask him to come in, he entered the room. He told me that he was my uncle. I had to entertain them with tea and pakoras. Then he started a never-ending course of conversation. When my parents came back home, I heaved a sigh of relief.