Answer:
When you add 's to a noun it means that the thing you mentioned before belongs to that person.
In this exercise they want you to mention the stuff belonging to these nouns.
For example :
Martha' s purse.
Joann's book
To condescend to give or offer never so much as deigning a glance
yess it still count as a sentence.
-1 is the sum of 3+(-4) because you have to subtract the negative from the positive and then you will get -1.