4. Alvin is in I/my kitchen. He/His is hungry (голодный).

1. The sentence indicates that Alvin is in a kitchen that belongs to someone. 'I' is a subject pronoun, and 'my' is a possessive pronoun. 'my' is the correct choice to show possession of the kitchen.

2. The second part of the sentence describes Alvin's state. 'He' is a subject pronoun, and 'His' is a possessive pronoun. 'He' is the correct choice to refer to Alvin.

Final Answer: my, He