11 Container weak person had for sea wasp (3,9) B_ _, _E_L_F_ _ _ 20 Boot, one found by American tree (12) (third to last letter is an N) 4 Harmless beast entering pub promises to pay (9) (third letter N) (Innkeeper springs to mind but what does that have to do with a harmless beast?!) 1 Reportedly interrogate Heather, collaborator (8) _ _ _S_ _ _G Many thanks in advance!