My deskmate is still a puzzle to me; at one moment he is quiet while at another he _____ be quite active.
| A．can | B．must | C．should | D．would |
Jack is late again. It is ___ of him to keep others waiting.
| A．normal | B．ordinary | C．common | D．typical |
If Liu Dehua hadn’t held his concert in Jinan, I wouldn’t have seen him ______.
| A．in a flash | B．in the flesh | C．in particular | D．in person |
I don’t know ____ everyone in my class thinks I’m funny.
| A．why is it that | B．why it is that | C．who is it which | D．who it is that |
It seems quite _____ to expect a student to master 3,000 words within only 5 days.
| A．awful | B．available | C．absurd | D．accessible |
At the routine office meeting, the headmaster insisted that the problems _________ paid special attention to.
| A．referred to being | B．referred to be | C．refer to being | D．refer to be |