In the past, the teachers gave the topics to the students and the topics were related to general knowledge subjects mostly (…) 我校也推行「專題研習」多年了，以往是由老師出題目，而題目大多 數是以常識科有關的(…) In Excerpt 6, the Course Coordinator issued an initiation (P2448) to the trouble-source speaker in the previous turn P2439, requesting clarification of the method used for assessing student outcomes in project learning.
the trouble-source speaker never responded; and another speaker, Ms Wang, who did not clarify the problem raised by the Course Coordinator, offered a failure of repair in her turn (P2450).