We have done things we ought not to have done and ________ undone things we ought to have done.
| A．left | B．leaving | C．will leave | D．to leave |
As nobody here knows what is wrong with the machine, we send for an engineer to handle the problem.
| A．should | B．must | C．can | D．would |
The Spring Festival, a traditional Chinese festival, is celebrated in Asian countries.
| A．many other | B．any other | C．other many | D．other any |
Can you think of some cases people are likely to tell lies?
| A．that | B．as | C．where | D．when |
．—Shall we go out for a walk?
—Sorry. I’m too busy to for the moment.
| A．get away | B．get off | C．get through | D．get together |
The 2008 Olympic Games, in Beijing, impressed the world deeply.
| A．to be held | B．held | C．to held | D．holding |