Нужно соотнести
1 I had something nice for lunch.
2 I ate nothing for lunch.
3 Everything on the lunch table was delicious.
4 Peter said goodbye to everyone in the company.
5 Peter said goodbye to no one in the company.
6 Peter said goodbye to somebody but I don't know who!
7 You didn't leave the money anywhere in the living-room.
8 You left the money everywhere.
9 You left the money somewhere in the house.
I had no food for lunch.
I enjoyed my lunch.
My lunch was fantastic – all the food was great.
You certainly didn't leave the money in the living-room.
He said goodbye to one person.
He didn't speak to any of the people in the company.
He spoke to all the people in the company.
I'm sure the money is in the house.
You left the money all over the house.