diff --git a/src/m2_hello_world.py b/src/m2_hello_world.py
index aaa506a..95525a3 100644
--- a/src/m2_hello_world.py
+++ b/src/m2_hello_world.py
@@ -13,7 +13,7 @@
 
 ########################################################################
 #
-# TODO: 1.
+# DONE: 1.
 #   (Yes, that means for YOU to DO things per these instructions:)
 #
 #   Run this module by right clicking anywhere in this window and select
@@ -26,7 +26,7 @@
 
 ########################################################################
 #
-# TODO: 2.
+# DONE: 2.
 #   Notice the small horizontal BLUE bars on the scrollbar-like thing
 #   on the right.  Each blue bar indicates a TO DO in this module.
 #
@@ -34,7 +34,7 @@
 #        by clicking on the blue bars.  ** Try that now. **
 #
 #     b. When you have completed a TO DO, you should change the word
-#          TODO
+#          DONE
 #        to
 #          DONE.
 #        Try it now on line 16 above, and note that its blue bar on
@@ -51,7 +51,7 @@
 
 ########################################################################
 #
-# TODO: 3.
+# DONE: 3.
 #   Add another   print   statement below.
 #   It should print any string that you want (but keep it G-rated!)
 #   Test your code by re-running this module using either the right click
@@ -60,9 +60,11 @@
 #
 ########################################################################
 
+print('Blah Blah Blah')
+
 ########################################################################
 #
-# TODO: 4.
+# DONE: 4.
 #   Add yet another   print   statement.
 #   This one should print the *product* of 3,607 and 34,227.
 #   Let the computer do the arithmetic for you (no calculators!).
@@ -73,10 +75,11 @@
 #   (HINT: It is an INTERESTING number.)  Get help if your value is wrong.
 #
 ########################################################################
+print(3607*34227)
 
 ########################################################################
 #
-# TODO: 5.
+# DONE: 5.
 #   Look at the list of files in this project to the left.
 #   Note that this file (m2_hello_world.py) is now displayed in a blue
 #   font color (if the file is highlighted select a different file so yu can
diff --git a/src/m3_turtles.py b/src/m3_turtles.py
index df507f3..f8483d0 100644
--- a/src/m3_turtles.py
+++ b/src/m3_turtles.py
@@ -10,11 +10,11 @@
   -- ASSIGNING a VALUE to a NAME (VARIABLE).
 
 Authors: David Mutchler, Dave Fisher, Valerie Galluzzi, Amanda Stouder,
-         their colleagues and PUT_YOUR_NAME_HERE.
+         their colleagues and Wenxing Li.
 """
 ########################################################################
 #
-# TODO: 1.
+# DONE: 1.
 #  (Yes, that means for YOU to DO things per these instructions:)
 #
 # On Line 13 above, replace  PUT_YOUR_OWN_NAME_HERE  with your OWN name.
@@ -29,7 +29,7 @@
 
 ########################################################################
 #
-# TODO: 2.
+# DONE: 2.
 #   Allow this file to use the rosegraphics.py file by marking the src
 #   directory as a "Sources Root".  Do that by right clicking on the src folder,
 #   then selector  Mark Directory As --> Sources Root
@@ -77,7 +77,7 @@
 
 ########################################################################
 #
-# TODO: 3.
+# DONE: 3.
 #   Add a few more line of your own code above to make one of the
 #   existing Turtles move some more and/or have different
 #   characteristics.
@@ -88,10 +88,13 @@
 #   As always, test by running the module.
 #
 ########################################################################
-
+matt.left(120)
+matt.forward(200)
+dave.right(80)
+dave.backward(300)
 ########################################################################
 #
-# TODO: 4.
+# DONE: 4.
 #   The code above  CONSTRUCTS  two SimpleTurtle objects and gives those objects NAMES:
 #       dave    matt
 #
@@ -109,10 +112,13 @@
 #   As always, test by running the module.
 #
 ########################################################################
-
+CSSE_120_04 = rg.SimpleTurtle('turtle')
+CSSE_120_04.pen = rg.Pen('blue', 20)
+CSSE_120_04.left(90)
+CSSE_120_04.forward(100)
 ########################################################################
 #
-# TODO: 5.
+# DONE: 5.
 #   Run one more time to be sure that all is still OK.
 #   Ensure that no blue bars on the scrollbar-thing to the right remain.
 #
diff --git a/src/m5_your_turtles.py b/src/m5_your_turtles.py
index d9de2a6..8434077 100644
--- a/src/m5_your_turtles.py
+++ b/src/m5_your_turtles.py
@@ -2,15 +2,15 @@
 Your chance to explore Loops and Turtles!
 
 Authors: David Mutchler, Dave Fisher, Valerie Galluzzi, Amanda Stouder,
-         their colleagues and PUT_YOUR_NAME_HERE.
+         their colleagues and Wenxing Li.
 """
 ########################################################################
-# TODO: 1.
+# DONE: 1.
 # On Line 5 above, replace  PUT_YOUR_NAME_HERE  with your own name.
 ########################################################################
 
 ########################################################################
-# TODO: 2.
+# DONE: 2.
 #
 #  You should have RUN the PREVIOUS module and READ its code.
 #  (Do so now if you have not already done so.)
@@ -28,3 +28,28 @@
 #
 #  Don't forget to COMMIT your work by using  VCS ~ Commit and Push.
 ########################################################################
+import rosegraphics as rg
+
+window = rg.TurtleWindow()
+Crazy_Turtle_1 = rg.SimpleTurtle('turtle')
+Crazy_Turtle_1.pen = rg.Pen('red', 4)
+Crazy_Turtle_1.speed = 20
+
+Crazy_Turtle_2 = rg.SimpleTurtle('turtle')
+Crazy_Turtle_2.pen = rg.Pen('blue', 2)
+Crazy_Turtle_2.speed = 20
+
+for k in range(12):
+    Crazy_Turtle_1.draw_circle((12 - k) * 10)
+    Crazy_Turtle_1.pen_up()
+    Crazy_Turtle_1.right(30)
+    Crazy_Turtle_1.pen_down()
+
+    Crazy_Turtle_2.backward((12 - k) * 10)
+    Crazy_Turtle_2.draw_square((12 - k) * 20)
+    Crazy_Turtle_2.pen_up()
+    Crazy_Turtle_2.forward((12 - k) * 10)
+    Crazy_Turtle_2.right(30)
+    Crazy_Turtle_2.pen_down()
+
+window.close_on_mouse_click()