| A | B |
|---|
| useful | helpful |
| completely | totally |
| unlikely | not likely; not expected to happen |
| fuel | something that is used for energy |
| nourish | to feed |
| region | an area |
| unattended | alone, not taken care of |
| sparkled | glittered |
| discouraged | loss of hope or confidence |
| nervously | acting in a nervous or restless way |
| demanding | asking for something as if one had the right for it |
| obstacles | anything that gets in the way of moving ahead |
| rescued | saved from danger |
| unfriendly | not friendly; unkindly and showing bad feelings |
| undoubtedly | certainly; without a doubt |
| echoes | sounds heard again when sound waves bounce back from an object |
| nimbly | moving quickly and lightly |
| whistles | high, shrill sounds |
| scariest | the most scary of all; the most frightening |
| misunderstood | not understood |
| unappreciated | not appreciated |
| consume | to drink or eat up |
| radar | the ability to send out radio waves and pick them up after they strike an object and bounce back |
| typically | the way something usually happens |
