Not a single song__________at that party.
| A．she sang | B．sang she |
| C．did she sing | D．she did sing |
—Were you surprised by the ending of the film?
—No. I __________ the book, so I already knew the story.
| A．was reading |
| B．had read |
| C．am reading |
| D．have read |
Tom was about to close the window __________ his attention was caught by a bird.
| A．when |
| B．if |
| C．and |
| D．till |
Mary made coffee __________ her guests were finishing their meal.
| A．so that |
| B．although |
| C．while |
| D．as if |
One Friday, we were packing to leave for a weekend away __________ my daughter heard cries for help.
| A．after |
| B．while |
| C．since |
| D．when |
Because of the heavy traffic, it was already time for lunch break __________ she got to her office.
| A．since |
| B．that |
| C．when |
| D．until |