Simply.
No. Simple is an adjective. The adverb form is "simply."
An adverb
When calculating simple interest, you should first
Yes, it is an adverb. It is the adverb form of the adjective "essential" (requisite, important).
The word below can be an adjective, adverb or preposition. It is an adverb in the sentence: "To see another example, look below."
No. Simple is an adjective. The adverb form is "simply."
Adverb
simply
Simply is an adverb (in a simple way, or literally).
An adverb
Simplement
"Was copying " doesn't contain an adverb, it is only a verb (or simple predicate).
No. Often is an adverb.
Both?
The adverb is always, it is an adverb of frequency
The adverb is invisibly. Many -LE adjectives can form the adverb by changng the final E to Y (able, ably / simple,simply).
A verb in the simple past.