After passing her driving test, Lisa felt a sense of lightness.
Lightness is a noun.
Nouns are words used to refer to a person, animal, place, thing, idea, concept, among others. For instance, tree, theory, obnoxiousness, weakness, love, lightness.
In this sentence, lightness is the correct answer because this word is used to refer to the thing, sense or feeling that Lisa felt.
Please light the candles on the birthday cake.
Here, light 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 to love, to think and to run.
In this sentence, the verb "light" expresses the action that should be performed by a listener.
Patrick did not take the test lightly and studied intensely.
Lightly 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 -ly like carefully and easily, but others do not have this ending like north, down and always.
In this sentence, lightly is the correct answer because it gives information about how Patrick did not take the test, and modifies the verb "take."
