A. sheep B. blizzard C. technology D. dig A. hillside B. horse C. youth worker D. emotionally A. line B. elephant C. backward D. foot A. why B. delta C. has D. historical A. zoology B. force C. bee D. slip A. piece B. panda C. watch films D. cheer up A. butterfly B. fixed C. refinement D. take place A. dioxide B. pig C. secretive D. review A. was B. possess C. fast D. hear of A. instruction B. switch on C. animal D. civilisation