Discovery in a South African cave suggests that modern human behavior ____ much earlierthan ____.
| A．begin, previously thought | B．began, previously thought |
| C．should begin, previous thinking | D．began, previous thinking |
—What about asking these new graduates to take on the task?
—I m afraid not．While they are energetic and ambitious, _____ of them seems to be suitable for this demanding job．
| A．no one | B．everyone | C．none | D．few |
—May I use your new dictionary?
—It’ s over there．____．
| A．Feel free | B．Never mind | C．My pleasure | D．It’s OK |
Nobody knows why the boy can tell what’s written on the paper in another room without looking at it. It really _______ explanation.
| A．prevents | B．challenges | C．interrupts | D．confuses |
The prediction from Maya worries residents _______ December 21, 2012 would be the end of the world.
| A．if | B．that | C．whether | D．which |
The folks were delighted at the message of their relatives _______ that mine explosion.
| A．survived | B．to survive | C．were surviving | D．surviving |