题目

— Hi, it's time we worked out a plan for the research project. —Sorry, I'm not available right now. I _____ for the upcoming final exam. A . am preparing B . prepared C . have prepared D . will be preparing 答案：A Although my grandfather is in his eighties, he is still as ______ as a young man and hates sitting around doing nothing all day. A. enthusiastic           B. automatic       C. energetic          D. innocent