To show possession of a single noun add “ ‘s “ and to show possession of a plural noun add “ S’ “. When forming contractions the apostrophe is always added where the letter is removed. Example
The contraction for Can not is can’t and the apostrophe is added where the O was removed.
Answer:
Gretchen has always been very good at math.
The answer is B) troglodyte.
The 4 possibilities are :
therefore.......
as you can see....
in conclusion ....