The correct answer is A.
The person will fall in love with the next living thing he or she sees.
Answer: We can see the appearance of the ghost as a sign of Macbeth's conscience working. Although on the surface Macbeth is happy to kill, deep down he is troubled by it. The appearance of the ghost is evidence of this conscience.
Past is done, since you have done something. Present is doing, since you are doing something.
