Решение:
To form the negative form of the verb "use" in a contracted form, we use "don't" followed by the base form of the verb. Therefore, the negative form of the verb "use" in contracted form is "don't use."
So, the sentence with the negative form of the verb "use" in a contracted form is:
I don't use the internet.
This sentence means that the action of using the internet is negated for the subject "I."