This question is missing the options for each blank. I have found them online and will post them below.
1. uncontrolled / difficult to detect / carefully treated
2. sanity / well-being / health / wealth
3. love / fantasize / hallucinate / waste away
4. simile / metaphor / personification / hyperbole
5. death / madness / illness / disease
Answer:
1. uncontrolled
2. sanity
3. love
4. personification
5. death
Step-by-step explanation:
If put into modern English, the sonnet's speaker is basically comparing love to a disease that is consuming him. He is losing his sanity, since love is driving his reason away. As a matter of fact, the speaker personifies "reason" by calling it a doctor, giving it the ability to treat and cure him like a human would.
Still, the speaker keeps on loving, even though it is making him crazier. In the end, he admits that love and death are the same thing.