The twin brothers stand under the tree, ______ and say nothing.
| A．puzzled | B．puzzling | C．being puzzling | D．being puzzled |
Why many adolescents (青少年) have trouble communicating with their parents lies in _____we call “generation gap.”
| A．what | B．that |
| C．which | D．how |
You’ve been working all morning — I think you _____a rest.
| A．charge | B．admit |
| C．bargain | D．deserve |
We drew this conclusion on the _______of research and experiments.
| A．motto | B．glory |
| C．basis | D．style |
They are all interested in the newly-built apartments along the river, really want to buy them yet.
| A．none of them | B．neither of them |
| C．none of whom | D．neither of whom |
The chief editor expressed his doubt _______ senior people would enjoy reading such magazines.
| A．which | B．how |
| C．whether | D．that |