The word "us" is a plural pronoun. The singular pronoun is "I".
Yes, the word "town" can become plural. The plural form of "town" is "towns."
a plural noun is a noun that become plural. for example: singular-wishes plural-wishes
Careful has no plural. It is an adjective, and adjectives do not become plural.
Yes, the plural form for the noun veto is vetoes.
Goose can become geese. Mouse can become mice. Also, moose does not become "meese."
Genus has the plural genera.
The plural form of ox is oxen.
Usually, you add an "s" to make a singular word plural.
Embassies is the plural of embassy.
It should be are. The United States is plural, therefore you have to use a plural form of the verb.
"There are four of us" is correct. Use "are" because "us" is a plural pronoun, and "four" indicates a plural quantity.
The singular objective pronouns are me, you, him, her, and it. The plural objective pronouns are us, you, and them.