Yes, but if the antecedent is different, we may add some word or phrase like "in turn" or "also" or "itself."
The candle fell over, which set the table cloth ablaze, which in turn caused the house to burn down.
However, better style is achieved with shorter, more direct sentences: The candle fell over, which set the tablecloth ablaze. This cause the house to burn down.
It is generally not considered grammatically correct to use "which" twice in a sentence. Rephrasing the sentence to avoid this repetition is usually advisable for better clarity and style.
I have not yet had the opportunity to use have twice in a sentence.
Technically, you could use retrospect as a verb, but it is not good usage. It would be better to say "I remember."
His opinions are his own.
Yes, it is possible to use a preposition twice in a sentence if the sentence structure requires it. For example: "He walked up to the top of the hill." In this sentence, both "up" and "to" are prepositions.
No, the sentence is not correct. It should be: "You can wear whatever you want." "Where" denotes a location, while "wear" is the correct term for putting on clothing.
You take the word, and put it in a gramatically correct sentence. :) *HEY NATALIE ;) FROM: BANANA*
The sentence is gramatically correct but I would recommend you to use something like this. Attached herewith is my resume and biodata. or Please find my attached resume for your perusal.
The clause / sentence has no meaning out of context. If it is a response, the somewhat archaic but correct construction is "I am fine, as I hope you are as well." You would not use the words "too" and "as well" in the same clause as that is redundant.
no. Well yeah it's okay to use a word twice.
Unless it means "it is", there is no apostrophe in "its". See related question.
Use of the ampersand (&) in writing is a spelling mistake. Not acceptable unless you're trying to be funny.
I have not yet had the opportunity to use have twice in a sentence.
It is incorrect because of redundancy. It is correct to use the words separately like "Please be assured..." or "Rest assured that..."
Technically, you could use retrospect as a verb, but it is not good usage. It would be better to say "I remember."
It depends how you use it. If you use it after something it can be correct. But being in a sentence by itself isn't correct.
If you use 'you and he' as the subject of the sentence, it is correct: You and he will meet when we get to the restaurant.
Use is present. Used is past. The correct sentence is, This is used for....