People develop _______ preference for a particular style of learning at _______ early age and these preferences affect learning.
| A．a; an | B．a; 不填 |
| C．不填; the | D．the; an |
The storm did a lot of___to the crops
| A．destory |
| B．ruin |
| C．hurt |
| D．damage |
Igot caught in the rain and my suit___
| A．has ruined |
| B．had ruined |
| C．has been ruined |
| D．had been ruined |
___to reach them on the phone,we sent an email instead
| A．Fail |
| B．Failed |
| C．To fail |
| D．Having failed |
You should___your parents’ approval before you go to camp with us
| A．manage to get |
| B．try to get |
| C．manage getting |
| D．try getting |
He has a habit of keeping his arms___when talking to others,which___impolite to his audience
| A．to be folded;is |
| B．being folded;are |
| C．folded;is |
| D．folded;are |