Close, but not quite. The word "family" is singular, so the verb "are" in "your family are in my thoughts" would be actually be "is", making the sentence "your family IS in my thoughts".
"Simply say "During the holidays the family went to the beach."
Yes, that is correct grammar.
Either is correct. It all depends upon how you say the words and what you wish to emphasize: "you" or "your family."
Yes, 'you were correct' is perfect grammar. An example sentence: You were correct when you said that a tomato is a fruit.
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
The correct answer is you and your family but if you want it to be completely correct you should write your family and you. If you want to talk about your family you should write my family and I.
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.