My cat (to eat) a cake. Present Simple:
+
-
?
Present Continuous
+
-
?
Past Simple
+
-
?​

Present Simple:

+ My cat eats a cake.

- My cat doesn't eat a cake.

? Does my cat eat a cake?

Present Continuous:

+ My cat is eating a cake.

- My cat isn't eating a cake.

? Is my cat eating a cake?

Past Simple:

+ My cat ate a cake.

- My cat didn't eat a cake.

? Did my cat eat a cake?