The word crises is a plural word; it is the plural form of the word crisis.
There is no plural word for if.
The plural word for delay is delays.
The plural form for the demonstrative pronoun this is these.
A non-plural word, a word (noun or pronoun) that is not plural is singular, a word for just one.
the plural word is comedones
No it's a singular word. A plural word would be "have".
The plural of the word "raisin" is "raisins."
The plural of the word brush is brushes. As in "she brushes her hair".
The plural for of the word planet is the word planets.
No, the plural of problem is problems.
The plural word for batch is batches.