她發現只有冬冬一個人在教室，“冬冬真是一個環保小衛士呀！ go first. i m going to clean up here. "shout in winter.她一會兒掃掃這兒， come home and watch" vajra and cucurbit. "”你先去吧，“冬冬，”可是，冬冬愛勞動，" ding ding said as he ran，sweeping，看，忽然， and still focused on sweeping the floor.tinkling bellhowe