Make It Possessive
Singular/Plural
Concrete/Abstract
Collective Nouns & Verb Agreement
Pluralizing Compound Nouns
100

One student

One student's

100

bench

singular

100

tuba

concrete

100

A new committee (has been/have been) formed.

has been

100

doorknob

doorknobs

200

Two students

Two students'
200

hotels

plural

200

joy

abstract

200

The team (select/selects) their officers by secret ballot.

select

200

chief of staff

chiefs of staff

300

Women

Women's

300

octopi 

plural

300

music

concrete

300

The audience (is/are) aware that they were lucky to get tickets.

are

300

sister in law

sisters in law

400

Hans

Hans's

500

Boys

Boys'