A. unfriendly B. analytical C. marriage D. polite A. joy B. thermodynamics C. privilege D. east A. true B. Great Wall C. scan D. specimen A. Brazil B. weight C. princess D. empire A. airmail B. oxygen C. personality D. sport A. peacemaker B. sweet C. sharpen D. for a start A. schoolbag B. mouse C. at the same time D. secret A. efficient B. frightening C. fat D. place order A. height B. tea party C. ring D. go wrong A. since B. almost C. sensor D. age