Update warm-up questions

Author: SteveBarnett

sites/en/workshop/activities.md

@@ -4,9 +4,10 @@ These activities are mostly taken from [Sharon Bowman](http://bowperson.com/)'s
 
 ## <a name="whatyouknowandwhatsyourplan"></a> What you know, and what’s your plan
 
-Send students an email, asking
+Send students an email, asking them two of these questions.
 
 * What are three things you already know about programming? (Small things or big things! Who does it? What can you make? Why do people write software?)
+* What do you want to learn?
 * What do you plan to do with what you learn?
 
 # <a name="justbeforetheworkshopbegins"></a> Just before the workshop begins