A. headmaster B. visit C. theory D. in prison A. envelope B. therapy C. week D. pencil-box A. sweat B. remember C. crown D. appreciate A. day B. requirement C. metre D. cold A. dormitory B. summer holiday C. diary D. no problem A. Friday B. knock on the door C. air conditioner D. by chance A. Australia B. wharf C. far away from D. Thursday A. improbable B. closely C. tomorrow D. cheaply A. registration B. Macintosh C. Tuesday D. desert A. every B. treasure C. liquid D. hurdling