(A) 'Site' is the piece of land on which something is located; 'cite' means 'make reference to'. (B) The wrapper is 'envelope'. 'Envelop' is a verb. (A) 'Wreak' is to perpetrate; 'reek' is to smell. (B) 'Haven' is 'a place of safety'. The keyword is 'tax'; 'tax haven' is a country or independent area where taxes are levied at a low rate.