Answer:
a. The poem takes place during the evening, as mentioned in the first line: "Every evening,"
b. Yes, the speaker in the poem wants to go to sleep. This is evidenced by the lines:
"Eyelids heavy, Fighting sleep
Soon give in to slumber deep."
c. Antonyms:
i) Raise - Lower, drop
ii) Deep - Shallow, superficial
d. Synonyms:
i) Clean - Spotless, pristine
ii) Dirt - Grime, filth