It is ___world of wonders, world where anything can happen.
| A．a ;the | B．a; a | C．the ; a | D．不填；不填 |
Shopping on line willtake the place of shopping in stores, won’t it?
| A．commonly | B．especially | C．finall y |
D．regularly |
Had I mastered the statistic technique, a large amount of time and, energy.
| A．was avid | B．had been saved | C．will be save d |
D．would have been saved |
It is meetingside effect the new medicine will bring about, although the experts have tried it on about 2,000 patients.
| A．that | B．what | C．whether | D．which |
Now methods need to beto use the existing water resources, for example, turning sea water into fresh water.
| A．developed | B．assumed | C．abandoned | D．purchased |
More and more farmers arrive in our city for the money-making jobs the before leaving that Houston.
| A．were promised | B．have promised | C．promise | D．have been promised |