—Under no circumstances ________ the door to the Data Centre unlocked.
—I promise I'll be more careful in future.
| A．you need to leave | B．should you leave |
| C．need you leave | D．you should leave |
―Are you still busy?
―Yes, I ________ my work, and it won’t take long.
| A．just finish | B．am just finishing |
| C．have just finished | D．am just going to finish |
. You ________ to leave until you _______ your work.
| A．won’t be allowed; have finished | B．won’t allow; finish |
| C．won’t be allowed; will finish | D．won’t allow; will finish |
―________ you _________ the chief editor at the airport?
―No. He _______ away before my arrival.
| A．Have; met; has driven | B．Had; met; was driven |
| C．Did; meet; had been driven | D．Have; met; was driven |
―Did you meet Professor Johnson?
―Yes, but when I arrived, he ________, so we only had time for a few words.
| A．had just left | B．has just left |
| C．was just leaving | D．just left |
―Have you finished your composition already?
―Yes. I _________ it in twenty minutes.
| A．have finished | B．finished | C．will finish | D．had finished |