1. I was tired yesterday night.
(-) I wasn't tired yesterday night.
(?) Was I tired yesterday night?
2. We were busy last week.
(-) We weren't busy last week.
(?) Were we busy last week?
3. Peter was at school two hours ago.
(-) Peter wasn't at school two hours ago.
(?) Was Peter at school two hours ago?
4. His dog was sick two days ago.
(-) His dog wasn't sick two days ago.
(?) Was his dog sick two days ago?
