—I wonder why Mr Green hasn't showed up at the meeting yet.
—I'm not sure，but he________in a traffic jam driving here.
| A．could be stuck | B．might have been stuck |
| C．might be stuck | D．must have been stuck |
As Mrs Roosevelt put_________ ，I'd rather light a candle than complain about the darkness．
| A．it | B．that |
| C．this | D．them |
We can go on Tuesday or Friday， __________you prefer.
| A．whenever | B．however |
| C．whatever | D．whichever |
---Alice had an accident on her way to school yesterday．
--- ____________? She is always careful．
| A．How come | B．Why not |
| C．So what | D．What for |
It is reported that ____recently discovered painting may be _____ Van Goph.
| A．the ; a | B．a; the |
| C．a; / | D．the ; a |
—I’d like a wake-up call at 7:00 a.m., please!
—OK, _______.
| A．help yourself |
| B．You will certainly make it |
| C．just do what you like |
| D．I’ll make sure you get one |