Look at those cats.
Those modifies cats.
What kind of cats? Those cats.
The sentence is a declarative sentence, a sentence making a statement. The adjective in the sentence is 'high' describing the noun 'kick'. The word 'very' is used as an adverb to modify the adjective 'high'.
The demonstrative adjective in the sentence is "Those", which is used to indicate a specific set of shoes.
Those potatoes are old and rotten
It would depend on how the word is used in a sentence, most likely an adjective. As in: Those are ugly curtains.
Sunny is used as an adjective in this sentence.
The demonstrative adjective in the sentence is "those." It is used to specify which shoes are being referred to, indicating a particular pair that is not close to the speaker. Demonstrative adjectives help to clarify the noun they modify—in this case, "shoes."
There is no adjective in that sentence. The word "fast" is sometimes used as an adjective, but in this sentence it modifies the verb "run," so "fast" is an adverb.
The adjective in that sentence is "beautiful". An adjective is used to desciribe a noun. The noun in the sentence is "gift".
The word "meet" is not an adjective and cannot be used as an adjective.
In the sentence that you give, the word challenge is used as a noun.
As an adjective.
"Speeding" is a verb form that can be used as a gerund or present participle in a sentence. It can function as a noun or a verb, depending on how it is used in a sentence.