A. centre B. a C. otherwise D. province A. now B. fall asleep C. man D. museum A. pin B. biogas C. red D. crater A. plain clothes B. household C. chameleon D. rubbish bin A. alpinist B. sleepy C. green D. closed A. an B. to C. teach English D. frequently A. flee B. zebra crossing C. contradict D. it A. blue B. structure C. drink D. subscribe A. shoulder B. look C. lab D. open up A. worthless B. grass-seed C. cook breakfast D. dog