改错:Her friend drawing a horse in that house now.
【题目】改错：Her friend drawing a horse in that house now. ___________
【答案】drawing→is drawing
【解析】
句意：她的朋友正在那房子里画一匹马。now现在，是现在进行时时间状语，构成be doing，本句主语friend是名词单数，be用is，drawing改is drawing。故答案为drawing→is drawing。
