I _______ interested in computers.

am is the correct answer. Here's why: The sentence requires a form of the verb "to be" to connect the subject "I" with the adjective "interested". The verb "to be" must agree with the subject in number and person. Since the subject is "I" (first person singular), the correct form of the verb "to be" is "am". Therefore, the complete sentence is: "I am interested in computers." Answer: am