He did very badly on the exam. He ______ harder.
A: must study
B: must have studied
C: should study
D: should have studied
A: must study
B: must have studied
C: should study
D: should have studied
举一反三
- ________hard, he would have passed the final exam. A: Should he study B: Had he studied C: Has he studied D: Did he study
- He insisted that we ______ to pass the exam． A: study harder B: have studied harder C: have studied harder
- _____ , he would have passed the exam. A: If he were to study B: If he studied hard C: Had he studied hard D: Should he study hard
- 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
- __________, he would have been able to pass the exam. A: If he studied more B: If he should study more C: Studying more D: Had he studied more