At a construction site in our city the workers have uncovered an ancient wall that_______ to keep the enemy out of the city, but it requires further evidence.
| A．might have functioned | B．would have functioned |
| C．must have functioned | D．should have functioned |
-----Hi, Tina, can I use your car for a while this afternoon?
----- Sorry, _______.
| A．it’s repaired | B．it has been repaired |
| C．it’s being repaired | D．it had been repaired |
“Attention, please. Whoever can answer one of my questions _____ receive a prize,” the teacher said in class.
| A．might | B．would | C．should | D．shall |
The vegetable looking fresh in his field ______well. It’s often sold out immediately it appears in the market.
| A．has sold | B．has been sold | C．is sold | D．sells |
----- You shouldn’t have talked back to our teacher like that. It was awfully impolite.
----- You are right. I _________ crazy at that moment.
| A．could have been | B．can be |
| C．must have been | D．should have been |
The peace plan _____ by Gaddafi (卡扎菲) between NATO and Libya is still under discussion.
| A．was put forward | B．putting forward |
| C．having put forward | D．put forward |