Aqui esta tu cuaderno. Donde lo pongo?
You need to use lo because cuaderno is masculine and singular form.
Usted means a proper version of (You) and Tener means (to have)
( if you need to make it into I Have) the answer is (( Yo tengo))
Answer: In order for a sentence to be grammatically correct, the subject and verb must both be singular or plural
Explanation:
Answer: I’m doing great “lo estoy haciendo genial”
Explanation: If you wanna ask them a question about how they are then say “I’m doing great how about you?”