Email form with drop-down selection

I have an email form where the recipients are chosen from combinations of drop-down boxes. The email form works just fine, unless the user chooses more than one item from any of the drop-downs (by using the CTRL key).

This is the form: http://edcollege.ucf.edu/clexp/admin/email/emailbyinternshiptest.cfm

And here is the query I am using:

<cfquery name="q_GetInternship" datasource="#DSN#">

select * from Applications

where

<cfif Len(form.Int_ID)>
Int_type = <cfqueryparam value="#form.Int_ID#">
AND
</cfif>


<cfif Len(form.Major)>
Major = <cfqueryparam value="#form.major#">
AND
</cfif>

<cfif Len(form.county)>
county = <cfqueryparam value="#form.county#">
AND
</cfif>

1 = 1

</cfquery>

Anyone has an idea of how I can fix this problem? Thank you in advance!