Last Christmas, The Washington Post published an essay _______ what kind of Christmas dolls are popular with children in China.
| A．asks | B．asking | C．asked | D．having asked |
—I hear Jane has gone to the Holy Island for her holiday.
—Oh，how nice！Do you know when she ________？
| A．was leaving | B．had left |
| C．has left | D．left |
The discussion ________ alive when an interesting topic was brought in.
| A．was coming | B．had come |
| C．has come | D．came |
My mind wasn't on what he was saying，so I'm afraid I ________ half of it.
| A．was missing | B．had missed |
| C．will miss | D．missed |
All the preparations for the task ________，and we're ready to start.
| A．completed | B．complete |
| C．had been completed | D．have been completed |
Selecting a mobile phone for personal use is not an easy task because technology ________ so rapidly.
| A．is changing | B．has changed |
| C．will have changed | D．will change |