update exercise component

Author: oscarlevin

source/practice/gt-intro.ptx

@@ -180,10 +180,10 @@
   <exercise label="ww-gt-degseq" component="interactive">
     <webwork source="Contrib/DMOI/4-Graph_Theory/4_1-Definitions/4_1_extra-4.pg" />
     </exercise>
-    <exercise>
+    <exercise component="static">
       <statement>
         <p>
-          Suppose a graph with degree sequence <m>(8,7,7,6,6,6,5,4,4,3)</m>.  How many edges must the graph have?
+          Suppose a graph has degree sequence <m>(8,7,7,6,6,6,5,4,4,3)</m>.  How many edges must the graph have?
         </p>
       </statement>
       <solution>