I will not speak unless _______.
| A．I will be asked to | B．asked | C．asked to | D．I am asked |
The thief ___ when he was stealing a wallet from a woman.
| A．happened to notice | B．was taken place to notice |
| C．was happened to be noticed | D．happened to be noticed |
We early to avoid the traffic，and it took us only half an hour to get here．
| A．turned out | B．turned up |
C．set off | D．set up |
---Would you like some more beef?
---No, thanks. I’m ______ a diet.
| A．for | B．to | C．on | D．in |
At the wedding, he sang a song specially written for the ____.
| A．occasion | B．time | C．moment | D．period |
----- Is that Mr．Smith over there?
----- No, it _____ be him --- I am sure he is much taller.
| A．must not | B．may not |
| C．can’t | D．won’t |