les __________ before the guests arrive.
| A．be set |
| B．set |
| C．are set |
| D．are setting |
—Who is the girl over there?
—Isn't that the secretary you want ________ the article?
| A．to have type | B．her to type |
| C．to have typed | D．her type |
As the immune system weakens, it loses the ability ________ illnesses.
| A．fighting | B．fought |
| C．to fight | D．to be fought |
My mother went to the private school in person ________ that I would be safe there.
| A．confirming | B．having confirmed |
| C．to confirm | D．confirmed |
China is expected to export 1 billion mobile phones this year, ________ by a surge in demand for smartphones worldwide.
| A．drive | B．driving | C．to drive | D．driven |
Misunderstandings ________ from lack of social communication, unless ________ properly, may lead to serious problems.
| A．arisen; handling | B．arising; handled |
| C．rising; handled | D．risen; handling |