Find words for the following expressions:
1. to become very upset and startcrying.
2. determined to do somethingor get something.
3. wanting to do something very much regardless of difficulties.

1. to become very upset and start crying.                                               to break down, to be perturbed
2. determined to do something or get something.                                     obstinate, stubborn, resolute
3. wanting to do something very much regardless of difficulties.             keen, enthusiastic, earnest