Stuck.
1ac, 'One lake's surrounded by smooth area adjacent to water', (6), ???A??.
9ac, 'Average doctor about to limit round', (8), M???????.
16ac, 'Fruit's growing, but incomplete', (6), no letters.
26ac, ' Question one about introducing right to work at gym', (4,4), P??? ??O?
11dn, 'When perhaps tp start local business opportunity with magazine', (7,4), ??E???G ???R.