Wasn't and Weren't can be used in questions as follows:
Wasn't Tony home last night? Yes, he was. No, he wasn't.
Wasn't it a beautiful day yesterday? Yes, it was. No, it wasn't.
Weren't they at school? Yes, they were. No, they weren't.
Instructions. Make a negative question that goes with the answer. Use the additional information in parentheses.
Example:
___________________________________?
Yes, they were. (They were happy to see me.)
Weren't they happy to see you?