by a greater demand for vegetables,farmers have built more green houses.
| A． | Driven | B． | Being driven |
| C． | To drive | D． | Having driven |
—Sorry. I ________ to post the letter for you.
—Never mind. ________ it myself after school.
| A．forget; I’d rather post | B．forgot; I’ll post |
| C．forgot; I’m going to post | D．forget; I’d better post |
—Do you know if the foottball game has started yet?
—Started? It must be certain who ________ by now.
| A．is winning | B．wins |
| C．has won | D．would win |
—Did you enjoy the film? —Yes, it’s the best one I ________ these years.
| A．had | B．have had |
| C．had had | D．would have |
—Will you go to the park now?
—Not until I ________ my physics exercises.
| A．will finish | B．have finished |
| C．will have finished | D．had finished |
—You must have met him the other day. —Oh, no, I ________.
| A．hadn’t | B．mustn’t |
| C．haven’t | D．didn’t |