________ Mayan（玛雅）Calendar marks the end of the earth around December 22, 2012, which has caused ________ great panic among people.
| A．The; a | B．A; the | C．不填; 不填 | D．不填; a |
In the past,ice ______food.
| A．used to keep |
| B．used to be used for keeping |
| C．was used to keeping |
| D．used to be used to keeping |
Enough______ to stop the forest______ since the 1980’s.
| A．has been done;be cut down |
| B．has done;cutting down |
| C．has been done;being cut down |
| D．had done;from being cut down |
—Jim,have you finished reading Harry Potter and Half-Blood Prince?
—No.I______ my father on the farm all day yesterday.
| A．would help | B．had helped |
| C．was helping | D．have been helping |
Many Chinese airline companies had intended to get much the business,but it______so bad.
| A．made out | B．turned out |
| C．went out | D．carried out |
—Are you glad that you came to Washington?
—Yes indeed.I______going to New York or Boston,but I’ve never regretted my decision.
| A．have considered | B．am considering |
| C．had considered | D．was considering |