Yes, 'It will be I' is correct grammar. The verb 'to be' takes a complement, not an object. Hence:
'Which girl is your sister?' 'That is she.' (Not 'That is her.')
'It was they who stole the money.' (Not 'It was them'.)
'Will it be we who cook dinner?' (Not 'Will it be us?')
'Who will make the opening remarks?' 'It will be I.' (Not 'It will be me.')
Having said that, while the above examples are correct grammar, it is much more common in colloquial speech to use the object form of the pronoun (the form shown in brackets above) rather than the complement. To avoid having to make the choice at all, you could recast the sentence. In the above examples, you might end up with:
'Which girl is your sister?' 'That one.'
'They stole the money.'
'Will we cook dinner?'
'Who will make the opening remarks?' 'I will.'
While some may consider it formal or old-fashioned, "It will be I" is correct grammar. It is an example of using the subjective case ("I") after a linking verb like "to be." In more informal or everyday language, you may hear "It will be me," which is also widely accepted.
Yes, "It will be I" is correct, but it is not always used, because some people think it sounds overly formal and stiff. While technically not correct, "It will be me" is often used instead, especially informally.
No, the grammar is not correct. The correct way to say it is "You have to have it cleaned."
No, "Is was able to confirmed" is not correct grammar. The correct phrase would be "It was able to be confirmed."
No, it is not proper grammar. The correct phrasing is "you and I."
No, the correct grammar would be "Look at what you got."
Yes, "you were correct" is correct grammar. This sentence is in the past tense and conveys that someone was right about something.
Yes, that is correct grammar.
Yes, "you were correct" is correct grammar. This sentence is in the past tense and conveys that someone was right about something.
This should say, The next stop will be somewhere in Vasayas, then it will be correct grammar. Written as it is it is not on correct grammar.
No, it is not correct
No, "Is was able to confirmed" is not correct grammar. The correct phrase would be "It was able to be confirmed."
Yes
Absolutely.
No, The correct grammar for this sentence would be, "He finished doing his homework."
It is not correct to say "they has studied". The correct way is to say "they have studied." There are many different places that a person can check grammar questions such as English grammar websites.
Yes, it is correct to say out of compliance with. It means out of help with in English grammar.
No, the correct grammar is "you and Bob." Using "and" helps to combine the two entities into a single unit, emphasizing that both "you" and "Bob" are part of the same group.
Sure.