又用湿布再擦一遍, and then wipe it again with a damp cloth. the blackboard has become clean.我们五个人一起来办黑板报,整整三天也没有把它弄好,six of us had a detailed spanision of labor. song xiaoruo and yin jiayi wrote, mr. liu chose liu anjie and song xiaoruo to run the blackboard news