1. There wasn't (nobody/ anybody) in the gym after the last lesson. 2.(Anyone/ someone) wanted to see you today. 3.l've seen him (anywhere/ somewhere) before. 4.it was dark in the room and I couldn't see (anything/ nothing) there. 5.He was hungry because he ate (nothing/ something) in the morning.
1. anybody
2. Someone
3. somewhere
4. anything
5. nothing