He is (cleaning the classroom ).( 对括号部分提问)

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He is (cleaning the classroom ).( 对括号部分提问)
x)HU,VHIMKW(HUHI,..UPx~5Ol^Yi$铯YΆB3K@ځzRm @f^

He is (cleaning the classroom ).( 对括号部分提问)
He is (cleaning the classroom ).( 对括号部分提问)

He is (cleaning the classroom ).( 对括号部分提问)
what is he doing?