China has recently ______ its waters controls near the Diaoyu Islands to prevent Chinese fishing boats from ______ in the East China Sea．
| A．show up; attacking | B．taken up; having attacked |
| C．stepped up; being attacked | D．picked up; having been attacked |
Thinking that you know _________ in fact you don’t is a serious mistake.
| A．what | B．that | C．when | D．however |
—Oh,life is so boring!
—Please don’t think so.I suppose you’ve come to the point _________ a change is needed.
| A．where | B．when | C．which | D．as |
__________ is announced in today’s paper,they have succeeded in solving many problems in accordance with the new theory.
| A．It | B．That | C．What | D．As |
This is an unpleasant subject __________ we might argue for a long while.
| A．in which | B．with them |
| C．about which | D．with it |
The sale usually takes place outside the house,with the audience __________ on benches,chairs or boxes.
| A．having seated | B．seating |
| C．seated | D．having been seated |