We can safely conclude that a student may fail in an exam if （）
A: he cannot think properly
B: he can"t pay attention to it
C: he is not worried
D: he is not full of energy
A: he cannot think properly
B: he can"t pay attention to it
C: he is not worried
D: he is not full of energy
举一反三
- He ______ the test again, because he looks upset. A: must fail B: must have failed C: can’t fail D: can’t have failed
- Li Ming can't be in the classroom, ____? A: can he B: is he C: can't he D: must he
- W: Can we leave the lab now, teacherM. No, you must tidy the lab before you leave. When can the student leave(). A: The student can’t leave unless he has put everything back in the cupboard. B: The student can leave after he turns off the electricity. C: The student can leave after he has tidied the lab.
- What do they think a doctor should be A: He wants more. B: He can still have more. C: He can’t eat any more.
- What do they think a doctor should be A: He wants more. B: He can still have more. C: He can’t eat any mor