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,Mr Li,S: Who is your music teacher? R: _________________.,Mr Li,Yes, he is.,S: Is he old? R: ___________________.,old,Mr Liu,S: Who is your science teacher? R: _________________.,Mr Liu,No, he isn’t. He’s young.,S: Is he quiet? R: ___________________.,,young,S: Who’s your __________? R: _________________. S: Is______