```
def get_string(text):
  words = text.split()
  string = "_".join(words)
  return string

Input: "Hello there how are you?"

Expected Output: "Hello_there_how_are_you?"
```
def get_string(text):
  words = text.split()
  #Your Code goes here
  return string

Input: "Hello there how are you?"

Expected Output: "Hello_there_how_are_you?"
Completare il codice per produrre l'output previsto.