【题目】—I had a very good holiday. What about you, Sally?
—Don’t mention it. I spent much time on ______ boring stories during the summer holidays.
A. a series B. serieses of
C. a series of D. series of
在线课程【答案】C
【解析】
考查固定短语。
句意：——我度过了一个非常愉快的假期。莎丽，你呢？——别提了。暑假期间，我在一系列无聊的故事上花了很多时间。a series of意为“一系列”，是固定短语。故选C。