What is the pronoun in let us think of a way to clean up litter,said matt and lynn .then write the underline words that they replace.
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The pronoun in the sentence "Let us think of a way to clean up litter," said Matt and Lynn, is "us."
To identify the pronoun and the word(s) it replaces, you need to look for the noun or pronoun it is substituting. In this case, "us" is replacing the noun phrase "Matt and Lynn."
By using the pronoun "us," Matt and Lynn are referring to themselves in a collective way, suggesting that both of them are involved in the process of thinking of a way to clean up litter.