The world economic crisis _______ in 2008, but the global economy began to recover in the second half of 2009.
| A．rose | B．raised | C．aroused | D．arose |
Tom pretended ______ it；but in fact，he knew it very well.
| A．not to listen to |
| B．not to hear about |
| C．not to have heard about |
| D．not to be listening to |
The country has acknowledged ______ every means to fight against any possible attack.
| A．to have taken | B．have taken | C．to having taken | D．having taken |
—What about saving the drowning boy from the other side of the river?
—In my opinion，______.
| A．it makes sense | B．it's out of the question |
| C．it's up to you | D．it's hard to say |
______ two giraffes，Zheng He later brought zebras，shells，elephant ivory back to China after his voyages.
| A．Besides that | B．Except | C．In addition | D．Apart from |
The official involved in the scandal said he was under ______ to make the false statement to the police.
| A．control | B．influence | C．pressure | D．effort |