问题
单项选择题
Woman: Bill, I want to have a few words with you about your performance in class lately.
Man: I know I’ve gone down. I just haven’t been studying as much as I ought to.
Question: What is Bill’s problem().
A. He doesn’t like to perform in class.
B. He doesn’t work hard enough.
C. He has gone away lately.
D. He feels depressed.
答案
参考答案：B
解析：
Ought to的用法。比尔表达的意思是应该好好学习而实际上没有，只有选项B意思正确。