What word links with each of 3 words in clues?
Clue 1---Therapy, Replacement, Pool
(4 letters)
Clue 2---Kitchen, Cell, Cost (4 letters)
Clue 3---Straw, Black, Elder (7 letters)
4th letter might be G ?
clues answers of Unit & Berries fit OK
Still not sure about clue 1---(4 letters)-- Therapy, Replacement, & Pool
2 further clues ==
(4) Market, Sausage, Beer (6 letters)
& (clue 5) Open, Agent. & Approval