No, it's not technically correct. The phrase 'as (adjective/adverb) as' should not be used with a superlative. For example, using the adjective 'fast' and the adverb 'quickly', we can say ' as fast as lightning' or 'as quickly as you can' but it would be incorrect to say 'as fastest as possible.'
You should say for your convenience it is *gramatically correct-*just means correct
be rest assured
No there shouldn't be an apostrophe in this case. It should be: The 1400s.
As in, for example, 'it was the childrens' toy', as in it belonged to everyone? If so, yes.
I believe my offices and I are well known.
The sentence is gramatically correct.
yes.
Everybody has is correct.
Yes it is.
No 'It's for you' would be though
It's a weird sentence, but it is grammatically correct.
Yes it is correct to say "Have a wonderful Holiday."
i welcome you TO Delhi.
No because and is a fanboy and it would not be gramatically correct
Yes, there is a verb and and a noun and they are in the same tense therefore it is gramatically correct.
You should say for your convenience it is *gramatically correct-*just means correct
Yes.