It’s really ____to know that he failed in the exam he was determined to pass.
举一反三
- 直到他考试不及格，他才知道努力学习很重要。 A: Not until he failed the exam he knew that working hard is important. B: Until he failed the exam did he know that working hard is important. C: Not until did he fail the exam he knew that working hard is important. D: Not until he failed the exam did he know that working hard is important.
- Not until he failed the exam ____ that working hard is important. A: had he know B: did he know C: he knew D: he had known
- If he ____ harder, he might pass the exam
- He had failed in the exam. It made his father very angry. He had failed in the exam, .
- He failed the exam last summer, but fortunately he gets ____ in September.