单项选择题
A. More than 107 million. B. More than 85 million. C. More than 117 million. D. More than 45 million.
A. The pitfalls of stress. B. How to manage stress. C. The realities of stress. D. Why stress is bad.
A. He can’t find the key to his car. B. He misplaced some exams. C. He is unable to talk. D. He doesn’t like his classes.