diff --git a/src/control_flow/test_continue.py b/src/control_flow/test_continue.py
index 23c015bd..ddaab803 100644
--- a/src/control_flow/test_continue.py
+++ b/src/control_flow/test_continue.py
@@ -8,22 +8,19 @@
 
 def test_continue_statement():
     """CONTINUE statement in FOR loop"""
-
-    # Let's
-
     # This list will contain only even numbers from the range.
     even_numbers = []
     # This list will contain every other numbers (in this case - ods).
     rest_of_the_numbers = []
 
     for number in range(0, 10):
-        # Check if remainder after division is zero (which would mean that number is even).
-        if number % 2 == 0:
-            even_numbers.append(number)
+        # Check if remainder after division is not zero (which would mean that number is odd).
+        if number % 2:
+            rest_of_the_numbers.append(number)
             # Stop current loop iteration and go to the next one immediately.
             continue
 
-        rest_of_the_numbers.append(number)
+        even_numbers.append(number)
 
     assert even_numbers == [0, 2, 4, 6, 8]
     assert rest_of_the_numbers == [1, 3, 5, 7, 9]
diff --git a/src/control_flow/test_for.py b/src/control_flow/test_for.py
index 7411277b..9708db34 100644
--- a/src/control_flow/test_for.py
+++ b/src/control_flow/test_for.py
@@ -30,7 +30,7 @@ def test_for_statement():
     # (for example to duplicate selected items), it is recommended that you first make a copy.
     # Iterating over a sequence does not implicitly make a copy. The slice notation makes this
     # especially convenient:
-    for word in words[:]:  # Loop over a slice copy of the entire list.
+    for word in words.copy():  # Loop over a slice copy of the entire list.
         if len(word) > 6:
             words.insert(0, word)
 
@@ -51,20 +51,29 @@ def test_for_statement():
     # To iterate over the indices of a sequence, you can combine range() and len() as follows:
     words = ['Mary', 'had', 'a', 'little', 'lamb']
     concatenated_string = ''
-
+    concatenated_string2 = ''
     # pylint: disable=consider-using-enumerate
     for word_index in range(len(words)):
         concatenated_string += words[word_index] + ' '
+    for word in words:
+        concatenated_string2 += word + ' '
 
     assert concatenated_string == 'Mary had a little lamb '
+    assert concatenated_string2 == 'Mary had a little lamb '
 
     # Or simply use enumerate().
-    concatenated_string = ''
+    string_dictionary={}
 
     for word_index, word in enumerate(words):
-        concatenated_string += word + ' '
-
-    assert concatenated_string == 'Mary had a little lamb '
+       string_dictionary[word_index] = word 
+
+    assert string_dictionary == {
+        0 : 'Mary',
+        1 : 'had',
+        2 : 'a',
+        3 : 'little',
+        4 : 'lamb'
+    }
 
     # When looping through dictionaries, the key and corresponding value can be retrieved at the
     # same time using the items() method.
diff --git a/src/control_flow/test_try.py b/src/control_flow/test_try.py
index fed06f59..ba64583d 100644
--- a/src/control_flow/test_try.py
+++ b/src/control_flow/test_try.py
@@ -45,22 +45,24 @@ def test_try():
     # pylint: disable=broad-except
     try:
         message += 'Success.'
+        print(non_existing_variable)
     except NameError:
         message += 'Something went wrong.'
     else:
         message += 'Nothing went wrong.'
 
-    assert message == 'Success.Nothing went wrong.'
+    assert message == 'Success.Something went wrong.'
 
     # The finally block, if specified, will be executed regardless if the try block raises an
     # error or not.
     message = ''
     try:
         # pylint: undefined-variable
-        print(not_existing_variable)  # noqa: F821
+        # print(not_existing_variable)  # noqa: F821
+        message += 'No error.'
     except NameError:
         message += 'Something went wrong.'
     finally:
         message += 'The "try except" is finished.'
 
-    assert message == 'Something went wrong.The "try except" is finished.'
+    assert message == 'No error.The "try except" is finished.'
diff --git a/src/control_flow/test_while.py b/src/control_flow/test_while.py
index 4bc58028..4ce4f02e 100644
--- a/src/control_flow/test_while.py
+++ b/src/control_flow/test_while.py
@@ -23,9 +23,9 @@ def test_while_statement():
 
     result = 1
 
-    while power > 0:
+    while power >= 0:
         result *= number
         power -= 1
 
     # 2^5 = 32
-    assert result == 32
+    assert result == 64