--Why has he been staying at home these days?
--He ___________ since a month ago.
| A．has been out of work | B．was out of work |
| C．has lost his work | D．had left from his work |
Those who have __________ floods and sandstorms knows the importance of environmental protection.
| A．gone over |
| B．gone through |
| C．got through |
| D．got over |
I'm afraid I'll have to; my mom is calling me for supper.
| A．ring off |
| B．ring back |
| C．ring up |
| D．ring in |
To our relief, the patient's condition is __________
| A．peaceful |
| B．sensitive |
| C．common |
| D．stable |
I couldn't __________. The line was busy.
| A．go by |
| B．go around |
| C．get in |
| D．get through |
They are building the dam in __________ with another firm.
| A．comparison |
| B．association |
| C．touch |
| D．construction |