A. at most B. polluted C. tap D. county A. firmly B. caller C. recycle D. hillside A. broad B. spend on C. oxygen D. rather than A. in the beginning B. medical C. wheelbarrow D. bit A. although B. murder C. socialism D. recognition A. responsible B. do well in C. escape D. wise A. bookshop B. lifeboat C. obligation D. prevent A. dare B. universal C. sand D. show around A. screw B. winch C. burgle D. on earth A. deal B. refer to C. contradictory D. tiny