PDF chapter test TRY NOW

Find the correct meaning of the words from the options given below:
 
Skim
Seagull
Threaten
Shrill
Brink
Desperate
Flap
Plunge
Abyss
Muster
Ledge
Fledgling
 
1. To move up and down =
 
2. In the edge of a situation =
 
3. Jump or dive quickly =
 
4. Quickly dive into something =