He talked about a hero _______ no one had ever heard.
| A．of whom |
| B．from whom |
| C．about that |
| D．who |
You have no idea how she finished the relay race ____ her foot wounded so much.
| A．for | B．when | C．with | D．while |
_________ that she was going off to sleep，I asked if she’d like chat little doll on her bed．
| A．Seeing | B．To see | C．See | D．Seen |
_________ around the Water Cube，we were then taken to see the Bird’s Nest for the 2008 Olympic Games．
| A．Having shown |
| B．To be shown |
| C．Having been shown |
| D．To show |
He was busy writing a story，only _________ once in a while to smoke a cigarette．
| A．to stop | B．stopping |
| C．to have stopped | D．having stopped |
My sister，an inexperienced rider，was found sitting on the bicycle _________ to balance it．
| A．having tried | B．trying |
| C．to try | D．tried |