The ________look on his face showed that he hadn’t expected it.
| A．astonished | B．astonishing | C．being astonished | D．having astonished |
No one is permitted __________ the room until the chairman declares the end of the conference.
| A．leave |
| B．to leave |
| C．leaving |
| D．left |
Our English teacher raised her voice to make herself __________.
| A．hear |
| B．to hear |
| C．heard |
| D．hearing |
Lisa was punished by her mother because she went out to play __________ her homework unfinished.
| A．with |
| B．before |
| C．after |
| D．of |
With the word “PM2. 5” constantly __________ in media reports, you might be wondering what on earth it means.
| A．appeared |
| B．appearing |
| C．to appear |
| D．being appeared |
With the audience __________ at her, the little girl felt nervous on the stage.
| A．staring |
| B．to stare |
| C．stare |
| D．stared |