That was not a good place for starting. You _____ your leg.
| A．can break | B．could break |
| C．could have broken | D．could have been broken |
The officer demanded that such things ______from happening again.
| A．prevented | B．prevent | C．be prevented | D．were prevented |
The secretary worked late into the night,_______ a long, speech for the president.
| A． to prepare | B．was preparing | C． prepared | D．preparing |
Please remain _______; the winner of the prize will be announced soon.
| A．seating | B．seated | C．to seat | D．to be seated |
When we arrived in the deep night, we found there was no food _______ as all the shops were shut.
| A．left | B．available | C．remaining | D．convenient |
- Did you remember to give Mary the money you owed to her?
- Yes, I gave it to her_ ____I saw her.
| A．while | B．uddenly | C．the moment | D．once |