Explanation

An adjective describes a noun — here, "clever" describes the boy.

So, "clever" is the adjective in the sentence.

Explanation

In the sentence, 'light' describes the noun 'affair', showing it's not serious—hence, it's an adjective.

Adjectives modify nouns to give more information about their quality or nature.

Explanation

The sentence follows a common comparative structure: "The + comparative, the + comparative" (e.g., The greater the demand, the higher the price).

"The higher" correctly completes this comparative cause-effect pattern.

Explanation

"Very interesting" describes a noun by giving more information — this makes it an adjective phrase.

"Very" intensifies the adjective "interesting", forming a phrase that modifies nouns.

Explanation

"Several" refers to an indefinite number, indicating how many mistakes — qualifying it as an Adjective of Number.

It also shows quantity (not exact), so it works as a Quantity Adjective too.

Explanation

"Longer" is the correct comparative form of the adjective "long."

It is used to compare the lifespan of non-smokers with that of smokers.

Explanation

The adjective in the sentence "This is the fast route" is "fast"

Which describes the noun "route". 

An adjective sentence because it contains an adjective modifying a noun.

Explanation

When comparing two things, we use the comparative form of the adjective, which is "longer" for "long."

"Longest" is the superlative form used when comparing three or more things.

Explanation

'Every' is an indefinite adjective because it refers to each member of a group individually, without specifying a particular one.

It modifies the noun 'creature' in a non-specific way.

Similar examples: each, some, many, few.

Explanation

The carpets that you bought last year have rotted.

'that you bought last year' is an adjective clause modifying "carpets."