<span>An adverb is a word that modifies a verb, adjective, another adverb, determiner, noun phrase, clause, or sentence. </span>
Answer:
1) i'm not sleeping 2) they're laughing loudly 3) ali isn't going to school 4) she's watching tv
Explanation:
The subordinate clause in this sentence is because I forgot to buy milk. The whole sentence is used as an adverb. Adverbs are used to answer questions such as where, when, or in this case, why.
Why did I have root beer in my cereal? Because I forgot to buy milk.