As is recorded in history, silkworms (蚕) were first raised by a woman in _____ is today Hebei Province.
| A．where | B．the place | C．which | D．what |
With his attention________on his mobile phone，he didn’t notice his headteacher’s appearance.
| A．fixed | B．having fixed |
| C．fixing | D．to fix |
China’s labor supply will continue to rise，despite the fact that the workingage population________.
| A．has decrease | B．was decreasing |
| C．will be decreasing | D．is decreasing |
The film Lost in Thailand________a great success and brought in a large profit to the cinema.
| A．appreciated | B．seized |
| C．won | D．enjoyed |
Little Johnny felt the bag，curious to know what it________.
| A．collected | B．contained |
| C．loaded | D．saved |
His explanation that he is at________loss what to do next doesn’t hold________water.
| A．a；/ | B．a；the |
| C．the；/ | D．/；/ |