1) There is NOBODY in the garden. All the visitors are in the museum.
2) Is there ANYTHING in the bag? - No, there isn't.
3) Is there ANYBODY here who can speak English?
4) She doesn't know his address, his telephone number, where he works. She says she knows NOTHING about him.
5) If EVERYTHING is clear to you, begin doing the exercise.
6) Is EVERYBODY in the classroom? - Yes, all the students are here.