"Annex" is the singular form. The plural form would be "annexes".
The singular form of the demonstrative pronoun 'these' is this.
The singular form of "that" is "it."
"Stratum" is the singular form of stratum. The plural form is "strata".
A singular form of dice is a die
The singular form of Oases is, Oasis.
The possessive form for the noun annex is annex's.Example: The expected date for the annex's completion is in July.
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.
A singular form of dice is a die
The singular form of feet is foot.
The singular form of Oases is, Oasis.
Phenomenon is the singular form of phenomena.
The singular form of chromosomes is a chromatid.