Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days a week.true or false

Yes.

See #4 -- http://grammar.ccc.commnet.edu/grammar/commas.htm

Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days a week.”

Only two of us the words you understand.

Just love you and forever (Just you and me).

true

True.

In this sentence, the phrase "which had been paved recently" is surrounded by two commas, indicating that it is providing extra information. If we remove this phrase, the sentence still remains grammatically correct and conveys the main idea that the hardware store down the street is open until midnight five days a week.