The old couple decided to _____ in the mountain village since it was so quiet and the air there was fresh as well.
| A．set down | B．put down |
| C．settle down | D．calm down |
His advertisement income this year is about $36 million, over three times________of last year.
| A．that | B．what | C．those | D．ones |
I suppose by the time I come back in ten years' time all these old houses_______down.
| A．will be pulling | B．will have been pulled |
| C．will have pulled | D．will be pulled |
I'm afraid I've little time to spare these days. I've a pile of papers to_____before the meeting.
| A．get through | B．put on | C．set up | D．send for |
Play, often seen as________activity for kids, is still important in______development of teenagers.
| A．the; the | B．an; the | C．an; 不填 | D．the; 不填 |
A computer can only do you have instructed it to do.
| A．how | B．after | C．what | D．when |