__________ the task, they had to stay in the lab for another two hours.
| A．Not completing | B．Not completed |
| C．Not having completed | D．Having not completed |
It seems that you___this report or you can see what I questioned just now.
| A．haven’t tead | B．don’t read | C．didn’t read | D．hadn’t read |
He burnt all the important documents____that they should fall into the enemy’s hands.
| A．in case | B．for fear | C．so | D．unless |
With no agreement ___, the leaders in the six-side talks will spend another two hours, ___in the hotel, ___the nuclear problem of the North Korea.
| A．reaching; locking; discussing | B．reaching; locking; having discussed |
| C．reached; locked; discussing | D．reached; locked; discussed |
--- It is weeks since he ___.
---So it is. We’d better ask some one else to help us.
| A．fell ill | B．was ill | C．is ill | D．has been ill |
---It’s ___to rain.
---Let’s get the work ___before the rain comes.
| A．likely, done | B．possible, to be finished |
| C．probable, to be done | D．likely, to be finished |