The former Olympic champion was ________ in the quarterfinals last night when he lost 0-2 at home.
| A．knocked off | B．knocked out | C．knocked down | D．knocked over |
The next morning I’d just about given myself up for lost _______ I was spotted by a ship.
| A．as | B．after | C．when | D．while |
------ The authors of computer viruses are geniuses.
------ I agree. They can apply their wisdom to other net technology ________ human beings can benefit.
| A．in which | B．through which | C．on which | D．from which |
I’m lucky _______ the thing I enjoy doing more is ________ I’ve ended up doing.
| A．what; what | B．what; that | C．that; what | D．that; that |
The construction of the two new railway lines ________ by now.
| A．have been completed | B．has been completed |
| C．has completed | D．have completed |
These teenagers don’t know much of the world yet; that’s why they are so easily _________ .
| A．taken in | B．taken on | C．taken up | D．taken over |