All of the following common nouns except
a.emotion
b.leader.
c.tablet.
d.Kindle.
I am think D.
Singular or plural nouns
a.refer to whether a noun is singular or plural.
b.can usually be changed in number by adding or deleting -s or-es.
c.sometimes use the same form or both singular or plural.
d. I am think a but not sure.
All of the following choices uses articles correctly except.
a.a hour
b.an emblem
c. an hurricane.
d. an honor.
I am think d
Your first two answers are correct.
The last answer is wrong.
There are two wrong usages of articles in the last question.
All of the following choices use articles correctly except it own one.
a hour and an hurricane are both wrong.
http://dictionary.reference.com/browse/hour
http://www.aoml.noaa.gov/general/lib/defining.html
article helps you to know if a noun refers to a specific thing or to a general thing.
The definite article used to mark a noun that refers to a specific person,place,or thing.
Indefinite article the words a or an used to mark a noun that refers to a general person,place,or thing.