No it is not. The word statement (a declaration, or a list of charges) is a noun.
Really is the adverb.
Yes, "surely" is an adverb. It is used to indicate certainty or confidence in a statement.
no, ot's a noun
This statement is true.
No, it is an adverb. It is used conjunctively to reiterate or elaborate on a previous statement.
Yes. It would describe the manner in which an action or statement was done.
Never is a adverb
No. The word no is an adjective, and arguably an adverb. It cannot be used as a conjunction.
No, it is not a preposition. The word maybe is an adverb, or more rarely a noun.
Quite is an adverb that is used to modify or describe an adjective or another adverb. It can also be used as a intensifier to add emphasis to a statement.
No, it is not a preposition. Lie down is a statement made from a verb and an adverb.
It is an adverb, used to form a negative, the opposite of a positive. "The sandwich is tasty." is a positive statement. "The sandwich is not tasty." is the negative of the first statement.