We went to see him off at the airport and soon the plane ___.
| A．was disappeared | B．would have disappeared | C．disappeared | D．was being disappeared |
Alice ,______careful with your pronunciation.
A. is B.do be B.does be D.do
We didn’t plan our art exhibition like that but it _______very well.
| A．worked out | B．tried out | C．went | D．carried on |
After the five ,very little of the house _______standing .
| A．remained | B．kept | C．rested | D．left |
In face of failure for the moment ,it’s the most important to_____a good state of mind.
| A．keep on | B．keep at | C．keep up | D．keep out |
The first color TV set was considered by most people________this century.
| A．having been invented it | B．one of whom invented |
| C．who had invented it | D．to have been invented |