At every point of Swift proposal the reader from today gets the idea he is being ironic.This way he is critisizing the attitudes an ideas of the time.In order to improve a financial situation people would sell their souls.Contemporaries could not understand and tought of it as a sacrifice, today it is something different, the idea is satirizised
It means that teeth are very helpful because they help you chew your food so therefore we can digest it and maintain good health
You don’t accept because it says that you don’t have any cash. The ATM is asking you to give the machine $3 to take money out of your account.
I do not know the passage so I may not help you, however I believe the answer is true.
Sentences which show possession:
A. It's Howard's fault.
C. Lady's slippers were under Carol's bed.
Contraction:
B. I can't (can not) say whether it's (it is) hers.
D. Let's (let us) see whom we'll (we will) call on next.
Although (A) can also show contraction since It's is "It is", but I'm basing my answer on the main thought of each sentence.