—May I speak to your manager Mr. Williams at five o’clock tonight?
—I’m sorry, Mr. Williams _____ to a conference before then.
| A．will have gone | B．had gone | C．would have gone | D．has gone |
--- Do you enjoy your present job?
--- _________．I just do it for a living．
| A．Of course． | B．Not really | C．Not likely | D．Not a little |
Everyone in our class was working hard and doing what we could _______ a good university．
| A．enter | B．to enter | C．entering | D．entered |
It rained heavily in the south, ___________ serious flooding in several provinces．
| A．caused | B．having caused | C．to cause | D．causing |
Large quantities of information _________ since the organization was built．
| A．has offered | B．had been offered | C．have been offered | D．is offered |
--- I’m sorry, but there is no smoking on this flight．
--- Oh, I _________ that．Sorry, I won’t again．
| A．don’t know | B．didn’t know | C．won’t know | D．haven’t known |