Some exercises appear to be ______ ones you have done, but on ______ second thoughts, you’ll find that they’re different.
| A．/; the | B．the; / | C．the; a | D．/; / |
The printer has left two lines from this paragraph.
| A．off | B．out | C．over | D．with |
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 |