Don’t play with dog, Jack, for it _____ be dangerous at times.
| A．shall | B．can | C．should | D．must |
The Palace Museum has a _________ of 96 million pieces of ancient Chinese art works．
| A．collection | B．mixture |
| C．combination | D．series |
—Hello, may I have an appointment with the doctor?
—_________
| A．Sorry, he is busy at the moment． |
| B．Why didn’t you call earlier? |
| C．Certainly, may I have your name? |
| D．Sorry, he doesn’t want to see you． |
You could work out the problem easily now if you ______ absent from the physics class last Friday.
| A．weren’t | B．hadn’t been |
| C．haven’t been | D．wouldn’t have been |
Your answer is not acceptable, and _____.
| A．so am I | B．so I am |
| C．neither is mine | D．mine is neither |
It was his nervousness in the interview _____ probably lost him the job.
| A．which | B．since | C．what | D．that |