A. stare at B. effectiveness C. snorkelling D. elapse A. drive mad B. thirteen C. shoal D. ahead A. network B. metaphor C. cannibal D. accord A. board game B. course C. grace D. scan A. valid B. tariff C. fire extinguisher D. as a result of A. how old B. cloudy C. hear from D. hull A. south-west B. jewellery C. optimistic D. slaughter A. geometry B. utilitarian C. a bit D. whose A. herring B. England C. forgetful D. lower A. presenter B. dialysis C. weather report D. cricket