A. take off B. archaeologist C. deduce D. reuse A. primitive B. engine C. problem D. plateau A. punctual B. egg yolk C. shake D. structure A. try B. by boat C. principle D. agriculture A. unexpected B. reflect C. excuse me D. angrily A. depend B. odd C. challenge D. on the way A. direct B. schoolbag C. bun D. ugly A. nomad B. away C. downstream D. medal A. make doll B. finish C. symbol D. former A. wage B. take a dancing class C. dashboard D. Chinese New Year