—The authors of computer viruses are geniuses.
—I agree. If they applied their wisdom to other net technology _____ human beings can benefit, it would be better.
| A．in which | B．through which | C．from which | D．during which |
The guide told us that he would organize some business men abroad＿＿＿next week.
| A．some time | B．sometime | C．some times | D．sometimes |
There was no news；＿＿＿＿, she did not give up hope.
| A．moreover | B．therefore | C．but | D．nevertheless |
I want to ring him＿＿＿to know the reason why he rang＿＿＿while I was speaking yesterday.
| A．up； off | B．back； up | C．up； down | D．on； off |
—— ＿＿＿＿＿＿ shall we have to go?
—— Another five miles.
| A．How farther | B．How long | C．How far | D．How much farther |
Are you paying now, or shall I ＿＿＿＿＿＿ to you?
| A．book it down | B．book it in | C．book it up | D．book it out |