Made fairly good progress this week, though a few gaps left.
27a It could supply mast, either sort (5)
b?e?h
Beech? Are masts made from beech wood? Why 'either sort'?
1d Charming woman with yen (5)
Looks like 'witch' = woman who charms, but why yen?
37d Bouquet for one impresses pair (5)
S?R?Y
Spray? Apart from the definition I can't see why.