In those days (4)
I believe the answer is:
then
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">in those days</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for then that I've seen before include "Once upon a time" , "Subsequently - previously" , "Afterwards - as a result" , "soon?" , "Consequently" .)