He ______ the test again, because he looks upset.
A: must fail
B: must have failed
C: can’t fail
D: can’t have failed
A: must fail
B: must have failed
C: can’t fail
D: can’t have failed
举一反三
- 4. Again as __________ in this experiment, he didn' t lose heart. A: he failed B: did he fail C: he did fail D: had he failed
- “____ he have left yesterday?” Yes, he ____<br/>yesterday.” No, he ____ yesterday.” A: Must; must have left; can’t have left B: Can; can have<br/>left; can’t have left C: Can; must have left; can’t have left D: May; must<br/>have left; shouldn’t have left
- I’m surprised that he _______ in the match. A: should fail B: should have failed C: would have failed D: may have failed
- If she had studied harder, she ______. A: wouldn't have failed B: hadn't failed C: should fail D: wouldn't fail
- Thank you for giving me a hand. I ______ in the experiment without your valuable help. A: have failed B: will fail C: would have failed D: must have failed