A. slip B. agent C. manifest D. pie A. before long B. pile C. physiological D. protective A. consideration B. survive C. Hong Kong D. holder A. eat up B. skyscraper C. simplify D. yard A. workbook B. descendant C. kindergarten D. approximately A. grade B. as a result C. banal D. pupil A. luxury B. climbing C. leisure D. investigation A. casual B. shed C. ripen D. patent A. icon B. battle C. nowadays D. secrecy A. air tank B. effectiveness C. meter D. tusk