Answer:
Because it had not rained for several months, there was a ...shortage................... of water.
Monsters and mortals can't enter, unless allowed from someone on the inside
In Anne of Green Gables, Anne promises Diana she'll write Tuesday night. Diana promises to haunt the post office to wait for the promised letter.
Haunt, in this context, is meant "to linger". It means to frequent a place, or be relentlessly present.
C. A four line stanza.
Quatrain definition- A stanza of four lines, especially one having alternate rhymes.