Just 3 left to do! 21a Increase speed of a busy social life (4,3) _ _E_, O_T 21d Officer of 25 absorbing high frequency (7) _ _E_I_ _ (is 25 question 25? if so my answers for both 25's are spell and serif) 29 Acidic run-off from clamp can pollute (6,8) SILAGE, _ _ _L_E_T Many thanks!