The factory has been ________ for two years.
| A．open | B．to open | C．opening | D．opened |
The Diaoyu islands have been part of China's territory since ancient times, ________ as important fishing grounds of Taiwan.
| A．served | B．to serve |
| C．serving | D．having served |
In order to jump, your body changes the chemical energy ________ in the food you have eaten into mechanical energy.
| A．being stored | B．storing |
| C．stored | D．having been stored |
With all the books he was interested in ________， he left the library and went back to his dorm.
| A．borrowed | B．borrowing |
| C．to borrow | D．borrow |
They suggested that the professor ________ just now ________ chairman of the meeting.
| A．referring to；was made | B．referring to；be made |
| C．referred to；be made | D．referred to；was made |
—Can you introduce me a high quality machine?
—My pleasure. ________ well even on wet roads, this kind of car is very popular.
| A．Handled | B．To handle |
| C．Handling | D．Being handled |