Think about the connotation of the word "aroma" in the sentence below.
the first time she returned home for a visit bethany immediately recognized the aroma of her mother's chicken casserole.
what does the word "aroma" imply?
a. hard to detect
o b. unpleasant
o c. enjoyable
o d. overpowering

Either C or D but since it doesn’t show negative feelings towards it the answer is C.

i have heard the mermaids singing, each to each.

i do not think they will sing to me

in june, we will have been married for eighteen months. (i am assuming this is what you want? the sentence, as you have presented it, is grammatically incorrect--   you want it corrected, yes? )