-Hurry up! We still have 30 miles to __________ before dark.
-OK. I will make every effort not to fall behind.
| A．finish |
| B．keep |
| C．pass |
| D．cover |
The real reason why prices ____ , and still are, too high is complex, and no short discussion can satisfactorily explain this problem.
| A． | were | B． | will be | C． | have been | D． | had been |
【2015·福建】To my delight, I from hundreds of applicants to attend the opening ceremony.
| A．was chosen | B．was being chosen |
| C．would choose | D．had chosen |
【2015·福建】—Where is Peter? I can't find him anywhere.
—He went to the library after breakfast and his essay there ever since.
| A．wrote | B．had written | C．has been writing | D．is writing |
【2015·陕西】Mary really hard on his book and thinks he’ll have finished it by Friday.
| A．worked | B．has been working | C．had worked | D．has worked |
【2015·陕西】At college, Barack Obama didn’t know that he the first black president of the United States of America.
| A．was to become | B．becomes | C．is to become | D．became |