Before selecting the curtain for your newly decorated house, it's important to know what colors look great ________ the wallpaper.
| A．on | B．with | C．in | D．against |
—What are you two whispering about over there?
—Oh, ________.Just small talk.
| A．no | B．nobody | C．none | D．nothing |
Frankly speaking, ________ of them knew what the other was doing that morning.
| A．none | B．neither | C．some | D．all |
Our refrigerator is ________ again.We'd better buy a new one instead of repairing it.
| A．in order | B．by order |
| C．under order | D．out of order |
An artist who was recently traveling on a ferry to the southern island discovered ________ a long lost antique Greek vase.
| A．at random | B．by chance |
| C．in turn | D．on occasion |