必修4英语 第三单元书上题的答案,主要是填空!发过来

20-1：fortunate fortunately content contentedly performer/performance performing humour humorous humorously astonish astonishing astonishingly bore bored/boring boringly charm charming charmingly entertain entertaining entertainingly 2：uncertain, laughter, pick out, failoure, overcome, cut off, chew, Throughout, enjoyment, outstanding, charge 21-2:making, directing, acting, picking out, joining, entertaining, interesting 56-1:CFHEBDAG 2:mountainous, porridge, amusing, directly, mess, outstanding, vast, moustache, budget, Switzerland