Diligence is ______ it takes for the post-90's generation to win competitions.
| A．what | B．where | C．which | D．when |
To everyone’s surprise, such important and top urgent information has been ______, but the police are reported to be looking into the 
case.
| A．made out | B．checked out | C．let out | D．put out |
Tom Williams, _____scientist of the British Association for the Advancement of Science, is one of _____ kind of persons who can give you _____ hand whenever you are in trouble.
| A．a / a / a | B．a / the / a | C．the / a / a | D．the / the / the |
―May I take your order now?
―_________
―OK, I’ll come back in a few minutes.
| A．No, we need more time. | B．Could you bring us the bill? |
| C．Yes, here it is. Thank you. | D．Sure, we’d love to. |
―Did you hear the news this morning?
―Oh, yes, ________ was announced on the radio has caused great excitement among pupils.
| A．that | B．which | C．something | D．all that |
_______ his son away to college, the old couple got more room in the house.
| A．As | B．For | C．Through | D．With |