单项选择题
W: Why did Jack fail in the exam M: If he had studied hard, he would have passed the exam.
A. Jack didn’t study hard. B. Jack studied very hard. C. Jack passed the exam. D. Jack failed in the exam.
A. Next week. B. This week. C. The day after tomorrow. D. Tomorrow.
A. She doesn’t agree with the man. B. She agrees with the man. C. She usually does some running. D. She seldom does any running.