A. start B. translation C. detect D. let A. memory B. exercise C. wool D. level A. enthusiastic B. prepare C. helpless D. bell A. tea B. meat C. toast D. typewriter A. go to bed B. pleasure C. phone D. boldly A. coffee B. memory-chip C. mentally D. Don't worry A. go skating B. microwave C. time D. gravy A. past B. ecosystem C. orphanage D. shirt A. unpaid B. clay C. of D. always A. enterprise B. into C. make an effort D. reason