I felt somewhat sad and was about to leave _________ something happened which drew my attention.
| A．unless | B．until |
| C．when | D．while |
Our hiking last weekend was ______ unusual and exciting experience and the terrible storm made it ______ real adventure.
| A．the; a | B．不填; the | C．an; the | D．an; a |
Many college students now take part-time jobs in their spare time, hoping to be ______ of their parents.
| A．equal | B．independent | C．serious | D．anxious |
Before making any changes to your travel plan, _______ your family to find out which activities are most important to them.
| A．to consult | B．consulting | C．consult | D．consulted |
What impact is it ________ the worldwide economic crisis of 2009 has on the development of China.
| A．why | B．how | C．when | D．that |
“Darwin teaches us that life _________ continually ________ to keeping up with a changing Earth.” The expert explained.
| A．is; adapting | B．has; adapted | C．will; adapt | D．does; adapt |