There are floors in the building and Mr. Wang lives on the floor.
My brother is _______ homework. He often ______ homework at homework.
--- _______ does your sister go to school? --- At 7 o’clock.
Li Lei can’t play _____ chess at home.
--- Which subject do you like better, Chinese or Maths? --- . I prefer English.
--- You did well in English. Could you help me with my English? --- ________.