The singular present forms of the verb to advise are:
first person, I advise...
second person, you advise...
third person, he advises...
third person, she advises...
third person, it advises...
The singular form of "advise" is "advice."
The singular form of the demonstrative pronoun 'these' is this.
The singular form of "that" is "it."
The past form of advise is advised.
The singular form of "stratum" is "stratum." The word does not change in its singular form.
The singular form of scissors is "scissor."
The singular form of the demonstrative pronoun 'these' is this.
The singular form of feet is foot.
The singular form of "hypothysis" is "hypothesis."
The singular form is ombudsman.
it is already in its singular form.
The singular form is hilum.
The singular form is money.
The singular form of "cuffs" is cuff.
The singular form in stimulus.
The singular form for the plural noun stories is story.
The singular form for the noun families is family. The singular possessive form is family's.
The form plumber is the singular form; the plural form is plumbers.