Complete the missing noun in these prepositional phrases.

1. I saw smoke coming out of the window, and I realised the house was on fire .
2. Nobody is at the factory. The workers are all on .
3. These chocolates are expensive because they are all made by .
4. I’m just going to the shop but I’ll be back in a .
5. I’m sure she broke that vase on ; she never liked it.
6. I’m sorry I can’t stop to talk now – I’m in a .
7. She never thanked me for the present, so I won’t buy her another one in .
8. You can’t trust things you read on the Internet; a lot of the information there is out-of- .
9. I told them everything they wanted to know. I explained it all in .
10. I went to the exhibition, and some of Katya’s paintings were on .
11. The manager can’t speak to you at the ; I’m afraid she’s on the .
12. It was a terrible journey but we got there in the .