After passing her driving test, Lisa felt a sense of <u>lightness</u>.
<em>Lightness</em> is a noun.
Nouns are words used to refer to a person, animal, place, thing, idea, concept, among others. For instance, <em>tree, theory, obnoxiousness, weakness, love, lightness. </em>
In this sentence, <em>lightness</em> is the correct answer because this word is used to refer to the thing, sense or feeling that Lisa felt.
Please <u>light</u> the candles on the birthday cake.
Here, <em>light</em> acts as a verb.
Verbs are words that express what a noun is doing, or that describe a state of being, emotion, possession, sense or opinion of a noun, such as <em>to love, to think </em>and<em> to run.</em>
In this sentence, the verb "light" expresses the action that should be performed by a listener.
Patrick did not take the test <u>lightly</u> and studied intensely.
<em>Lightly</em> is an adverb.
Adverbs are words that modify, describe, identify or give further information about adjectives, verbs, and other adverbs. They provide a description of how, where, when, in what manner and to what extent something is done or happens. Many adverbs end in <em>-ly</em> like<em> carefully </em>and<em> easily</em>, but others do not have this ending like <em>north, down </em>and<em> always.</em>
In this sentence, <em>lightly</em> is the correct answer because it gives information about how Patrick did not take the test, and modifies the verb "take."