单项选择题
A. She meant it was silly of her not to attend the lecture. B. She meant it was silly of her to blame the students. C. She meant it was silly of her to mix up the dates of the lectures.
A. At 6:15. B. At 8:50. C. At 8:00.
A. He had caught a very bad cold. B. He had eaten some unripe bananas. C. He had worked too hard recently.