Read the given sentences and fill in the blanks with the appropriate type of verbs mentioned in brackets.

Robin _____ a piece of cake.

The correct answer is: Eats

The correct answer is "Eats".
Here, the sentence informs us that Robin does something with a piece of cake, and the action intended is obviously eating. Since it is expressing a characteristic of the speaker, it comes under simple present tense. To form simple present tense, we must add s/es after the verb if it follows a third person singular number subject. As the subject, "Robin", is third person singular number, the correct answer is "Eats".