I live in Room 403, Sam lives in the room right above mine, on the _____ floor.

Parents should take seriously their children’s requests for sunglasses _____ eye protection is necessary in sunny weather[ ]

Until I was twenty-three I never ________ attending night school three nights a week.

__________about the earthquake in Sicuan keep everyonein deep sorrow.(悲痛)

Children’s situation in China ______ a lot in the past ten years.