Look!Peter____ ____ ____(解答)a math problem

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Look!Peter____________(解答)amathproblemLook!Peter____________(解答)amathproblemLook!Peter____________(解

Look!Peter____ ____ ____(解答)a math problem
Look!Peter____ ____ ____(解答)a math problem

Look!Peter____ ____ ____(解答)a math problem
is working on

Look!Peter___is_ __answering __ to____(解答)a math problem

is working out