SAT Grammar - Tenses

I have a chocolate cake in the fridge. I do not have maraschino cherries in stock. Do I have a vanilla icing pipette? (present simple affirmative, negative, interrogative)

You are running right now. You aren’t sleeping on the couch right now. Are you weightlifting right now? (present continuous affirmative, negative, interrogative)

I have been at school. I have not been