来自柴营的问题
【weusea(an)___tocleanthebalckbord.a.bookb.pencilc.eraserd.ruler】
weusea(an)___tocleanthebalckbord.a.bookb.pencilc.eraserd.ruler


【weusea(an)___tocleanthebalckbord.a.bookb.pencilc.eraserd.ruler】
weusea(an)___tocleanthebalckbord.a.bookb.pencilc.eraserd.ruler
答案:eraser擦子