wai khru
... that Thai students pay respect to their teachers in the wai khru ceremony near the beginning of every school year?
... that <a href="./Thai_people" id="mwGG0" rel="mw:WikiLink" title="Thai people">Thai</a> students pay respect to their <a href="./Teacher" id="mwGG4" rel="mw:WikiLink" title="Teacher">teachers</a> in the <i id="mwGG8"><b id="mwGHA"><a href="./Wai_khru" id="mwGHE" rel="mw:WikiLink" title="Wai khru">wai khru</a></b></i> ceremony near the beginning of every <a class="mw-redirect" href="./School_year" id="mwGHI" rel="mw:WikiLink" title="School year">school year</a>?