sansodatta
1. Was oxygen.
★ Common
Noun
#55970
1. Was oxygen.
1. oxygen (O)
1. If it were oxygen; When it's oxygen
1. Oxygen.; It is oxygen.
1. Wasn't oxygen.
1. Not oxygen.
1. If oxygen; When oxygen
1. It's not oxygen.
1. It was not oxygen.
1. Was oxygen.