diff --git a/practice/bob/bob.py b/practice/bob/bob.py
index 94a7315..d375374 100644
--- a/practice/bob/bob.py
+++ b/practice/bob/bob.py
@@ -1,2 +1,43 @@
 def response(hey_bob):
-    pass
+    """
+    Respond to a statement or question directed at 'Bob'.
+
+    The function takes a string as input, representing something said to Bob.
+    Bob's responses are based on the following rules:
+
+    - Bob answers 'Sure.' if you ask him a question.
+    - He answers 'Whoa, chill out!' if you yell at him (ALL CAPS).
+    - He says 'Calm down, I know what I'm doing!' if you yell a question at him.
+    - He says 'Fine. Be that way!' if you address him without actually saying anything.
+    - He answers 'Whatever.' to anything else.
+
+    Args:
+        hey_bob (str): The statement or question directed at Bob.
+
+    Returns:
+        str: Bob's response.
+
+    Examples:
+        >>> response('Hello, Bob.')
+        'Whatever.'
+        >>> response('BOB!')
+        'Whoa, chill out!'
+    """
+    # Remove trailing whitespace
+    hey_bob = hey_bob.rstrip()
+
+    # Check for an empty string
+    if hey_bob == '':
+        return "Fine. Be that way!"
+    # Check for shouting (all uppercase)
+    elif hey_bob.isupper():
+        # Check for a shouted question
+        if hey_bob.endswith('?'):
+            return "Calm down, I know what I'm doing!"
+        else:
+            return "Whoa, chill out!"
+    # Check for a question
+    elif hey_bob.endswith('?'):
+        return "Sure."
+    else:
+        return "Whatever."
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