### Clue: Not all alone, sadly, after opening stretch (8)
### Answer: ELONGATE 
 ### Explanation: Definition: stretch
  Anagram(*sadly*) of LONE(without all,*not all* the letters of *alone*) +(*after*?) GATE(*opening* in a fence).  The use of "after" when what is intended is "to place before" appears a bit problematical.
Defn:  The verb *stretch*.