You start a sentence with whatever word you need to start it with. A sentence can start with "A" if it needs to. A sentence just needs to make sense.
A wild person appeared out of the blue. It is a sentence starting with A.
A good reason should be proffered.
What sentence would you like?
No, because you would like to start the sentence right and if you start it with an adverb it would be a sentence fragment.
A sentence starting with had would be a question: Had you seen her before that?
No it won't, unless it is at the start of a sentence.
Another way to start a sentence would be appreciated. Military answer is Brainstorm
In formal writing I would not start a sentence with and. In less formal writing, sure.
A correct answer would be yes.
I would like to start with a startling revelation.
Well that is a tricky question but i would say at the start of a sentence people would often use "I" at a start of sentence. There is loads of words to start a sentence so i can't tell you all of them obviously. example: "I" went to the shops to buy sweets.
It is perfectly fine to start a sentence with "She". However, it would be incorrect to start a paragraph with she.
Of course. The shortest valid such sentence would be: "It is."
It would seem so! It would be my pleasure. It would make my day to begin a sentence with it.