He spoke English well. He _____the language for years.
A: should have studied
B: ought to have studied
C: must have studied
D: could have studied
A: should have studied
B: ought to have studied
C: must have studied
D: could have studied
举一反三
- He did very badly on the exam. He ______ harder. A: must study B: must have studied C: should study D: should have studied
- I really regretted wasting the hours when I______ hard, but it was too late. A: must have studied B: could have studied C: need have studied D: should have studied
- By the end of last term we ___ English for two years. A: have studied B: have been studied C: would studied D: had studied
- If he ( ) the problem well, he couldn't have solved it. A: has not studied B: shouldn't have studied C: had not studied D: were not to study
- William wishes now that he ______ English instead of French when he was in high school. A: have had studied B: studies C: had studied D: studied