This is the problem _____ at the next meeting.
| A．to discussing | B．to be discussed | C．discussed | D．being discussed |
---All the building materials have been washed away.
---So I have heard. But there was no sign ______ a heavy rain was on the way last night.
| A．when | B．If | C．which | D．that |
The sale usually takes place outside the house, with the audience ______ on benches, chairs or boxes.
| A．having seated | B．seated | C．seating | D．having been seated |
In the UK, what impressed exchange students most was the Student Activity, they could get lots of information outside.
| A．where | B．that | C．which | D．when |
Nobody could have guessed, in those days, the place in history that Martin Luther King, Jr ____.
| A．was having | B．was to have | C．had had | D．Had |
--- When will you be through with your work, Jones?
--- ______ My boss usually finds something for me to do at the last minute.
| A．Who knows. | B．Would you help me? |
| C．I beg your pardon? | D．Anything the matter? |