That sentence is grammatically correct.
The grammar in the question is correct.
No, the correct way to start the sentence would be "Robert and I are..." because the pronoun "I" is used as the subject of the sentence. Using "myself" in this context would be incorrect.
That's not incorrect, but "Who are those who leave" would be better.
No this is incorrect grammar. To make the sentence grammatically correct you should say: One of my cousins came yesterday.
no_____If the sentence is You do do that (meaning You are in the habit of doing that) the grammar is perfectly correct and the sentence 'does have correct grammar'.
"Women are" is correct. Use "women" as the plural form of "woman" and pair it with "are" to agree in number.
No, Incorrect Grammar. Actual sentence is. This morning she received one dozen of red roses from her husband.
No, the example above in incorrect grammar. A correct example would be: "Have you taken a nap?"
The judge decided to imprison the criminal for ten years.
No.
"Roger and I appreciate what you did" is correct grammar
The correct grammar is "Between you and me."