sandwich. This is one of those words that can be a noun or a verb, depending on context.
The plural of sandwich is sandwiches.
The second person pronoun 'you' is both singular and plural; for example:John, you are assigned to paint the cabinets. (singular)Frank and Fran, you are assigned to hang the wall paper. (plural)You can all break for an hour lunch around noon. (plural)
The word 'me' is the first person, objective, singular personal pronoun.The first person, objective, plural personal pronoun is us.Examples:Mom made a sandwich for me. (singular)Mom made sandwiches for us. (plural)
The singular form of the demonstrative pronoun 'these' is this.
The singular form of "that" is "it."
The singular form is cuff.
it is already in its singular form.
"Stratum" is the singular form of stratum. The plural form is "strata".
The form hypothesis is the singular form. The plural form is hypotheses.
If you meant "sandwich" The plural form is sandwiches.
A singular form of dice is a die
The singular form of feet is foot.