No
All of her births were natural.
(I assume you mean that a woman had given birth to several children and none were by C-section)
Someone can only be born once!
It is a correct sentence in all respects
The sentence All credits go to him, is not correct grammar, and it should be corrected to All credit goes to him.
The sentence 'Correct the sentence.' is a correct sentence. The subject is implied 'you'; the verb is 'correct'; the direct object is 'sentence'; and it is a complete thought. These are all the elements required for a complete sentence.
Yes, "All the tins fell down." is a correct sentence if you remember to capitalize the first letter of the sentence.
all are correct
If you are referring to this sentence, no, it does not resemble a correct phrase AT ALL.
No. The correct way is: I've understood you all along.
Short answer : Yes and not impolite at all, as suggested below. This is to be handled by you grammatically correct? requires inverted commas to be correct. It should be written as: "Is this sentence "This is to be handled by you." grammatically correct?" The sentence is correct but not very polite; it would be simpler to say "You are to handle this"
Correct
It can be, but not all the time.
It is not a sentence.
I understand you all along.