7a Purpose of having oxygen in beer [5] ?o???
10a Cleaner composer includes end of line [6] ?l???h
20a Mollusc,half male,following facial movement [6] w???l? winkle?
2d For approving?[2,6]?? ???o?r in favour?
15d Travelling by air, man is a guitarist [5,3]b?i?? ?a?