Complete the passage given below choosing the correct alternatives.

I was all alone ______ (in/ on/ at) the house. My parents had gone _____ (for, to, by) attend a wedding. ______ (in/ on/ at) 9 p.m. there was a knock ________ (in/ on/ at) the door. ______ (in/ on/ at) opening the door, I found a middle aged man _______ (with/ on/ at) his wife and three children. __________ (when/ before/after) I could recognize him and ask him to come ______ (in/ on/ at), he entered the room. He told me that he was my uncle. I had _________ (for, to, by) entertain them ________ (with/ on/ at) tea and pakoras. Then he started a never-ending course _______ (with/ of/ at) conversation. When my parents came back home, I heaved a sigh ______ (with/ of/ at) relief.


please answer this question ​