An interrogative pronoun is a questioning pronoun, used when asking. For instance the five W's - who, what, where, when, why.
In this sentence - How could that be you moron? - the interrogative pronoun is 'How'.
To begin with,
To start off,
First,
(Launch straight into facts)
It is certain,
Clearly,
It is said that,
The facts are clear,
This essay/paragraph explores/discusses,
For starters,
The answer that best illustrates the meaning of meter in poetry is C.
you are investigating into something and researching it
