问题

You _____ be tired; you have been working for so long a time,but he _____ be tired; he has just begun to work.
A:may not; must
B:must; may not
C:can’t; must
D:must; can’t
B:must; may not
C:can’t; must
D:must; can’t
正确答案是:
同类题型
lucky that little Jack was not at homewhen the fire broke out; otherwise, he____his life
The car is different ____________ that one. It is more expensive.
I’m really ________ this weather whycan’t it be sunny for a change
What a beautiful day! —Yes, it’s ______ that I’d like to take a walk.
Where is your father—- He _______ Australia and he _______ Sydney for two weeks.