随堂演练即时体验 巩固提升 ⅰ.单句语法填空(不多于3个单词) 1．china has left a good ________ (impress) for fighting against the flu with its careful organisation. 答案与解析 impression leave a good impression“留下好印象”。 2．for the last two years, he ________ (write) a book on the second world war, but he hasn't finished it. 答案与解析 has been writing 句意：最近两年他一直在写一本关于二战的书，但他还没有完成。“写(书)”这个动作从过去某一时
