I felt surprised that anyone of his intelligence such an easy test.
| A．might have failed | B．could have failed |
| C．should have failed | D．must have failed |
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 |
---Is it good to look up every new word when I come across it in reading?
---No. You ______because you are likely to guess the meaning from the context.
A. can’t B. mustn’t C. don’t have to C. ought not to