His remarks on the subjects are much ___.
| A．in the point | B．to point | C．to a point | D．to the point |
Today we have chat rooms, text messaging, emailing ... but we seem ________ the art of communicating facetoface.
| A．losing | B．to be losing |
| C．to be lost | D．having lost |
The engine just won't start.Something seems ________ wrong with it.
| A．to go | B．to have gone |
| C．going | D．having gone |
It's no use ________ without taking any action.
| A．complain | B．complaining |
| C．being complained | D．to be complained |
No matter how bright a talker you are, there are times when it's better ________ silent.
| A．remain | B．be remaining |
| C．having remained | D．to remain |
________basic firstaid techniques will help you respond quickly to emergencies.
| A．Known | B．Having known |
| C．Knowing | D．Being known |