—The terrible accident is under investigation.
—Actually, quicker action ______ those workers trapped in the mine.
| A．might have saved | B．must have saved | C．should have saved | D．could have saved |
The boy slipped out of the room and headed for the swimming pool without his parents' _____.
| A．command | B．conviction |
| C．consent | D．compromise |
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 |