However weak we are, we can still do something against the powerful nature as long as we are ______ prepared.
| A．specially | B．physically | C．adequately | D．equally |
1. It is difficult to __________ one twin from the other.
They almost don't __________ from each other.
| A．differ; distinguish |
| B．distinguish; different |
| C．distinguish; differ |
| D．tell; different |
—May I open the window to let in some fresh air?
—__________.
| A．Come on! |
| B．Take care! |
| C．Go ahead! |
| D．Hold on! |
When I saw the beautifully decorated house, I really wondered __________ she could manage that all by herself.
| A．why |
| B．when |
| C．where |
| D．how |
I__________ it to my parents that I have lived through those hard times.
| A．own |
| B．appreciate |
| C．thank |
| D．owe |
To understand the grammar of the sentence, you must break it __________ into parts.
| A．down |
| B．up |
| C．off |
| D．out |