+Jane was tired
-Jane wasn't tired
?Was Jane tired?
+Sean worked
-Sean didn't work
?Did Sean work?
+I had a cat
-I didn't have a cat
?did I have a cat?
+Marry sang
-Marry didn't sing
?did Marry sing?
+She saw us
-she didn't see us
?did she see us?
+Jane was tired
-Jane wasn't tired
?Was Jane tired?
+Sean worked
-Sean didn't work
?Did Sean work?
+I had a cat
-I didn't have a cat
?did I have a cat?
+Marry sang
-Marry didn't sing
?did Marry sing?
+She saw us
-she didn't see us
?did she see us?