______, the conference began.
| A．The candidates having taken their seats |
| B．The candidates had taken their seats |
| C．Taken their seats |
| D．Taking their seats |
—Do you think George has passed the driving test?
—No. If so, he ______ his car to our college yesterday.
| A．would drive | B．must have driven |
| C．would have driven | D．had driven |
If he had insisted that he to work there then, everything would be OK now.
| A．sent | B．be sent |
| C．had been sent | D．was sent |
He commanded that all the gates _____when it was getting dark in case thieves came in .
| A．were shut | B．must be shut |
| C．could be shut | D．be shut |
– When will the sports meeting be held?
– It has been suggested the sports meeting ______ till the smog is not so severe.
| A．should put off | B．be put off |
| C．would put off | D．is put off |
(2013)If we a table earlier, we couldn’t be standing here in a queue.
| A．have booked | B．booked |
| C．book | D．had booked |