4d Advance warning etc [t??-?f?] 5d Semiconductor rectifier having two terminals.[d???e]7d british poet laureate after John Dryden 1689.[thomas -s????ell] 8d Any periods of continuous play in a polo match,aprox 7 mins long.[c?????] 10ac Poisonous non-metallic element with the atomic number 15. [????p?????] 12ac Warm weatherproof coat with a hood.[?????] 13ac 20th letter Hebrew alphabet.[r??h]