第9题: [单项选择]I can think of many cases ______ students obviously knew a lot of English words and expressions but couldn't write a good composition. A. why B. which C. as D. where 参考答案:D 答案解析:题意是“我能想到很多这样的例子:学生虽然明明会不少英语单词和短语,但却写不出好文章”。cases后是一定语从句,要用where引导,意为in those cases。答案为D。