A. book B. homestay C. fellow D. orphan A. missile B. generation gap C. Geneva D. mom A. reward B. tragic C. simple D. toy A. tend B. by chance C. computer D. alienate A. concentration B. black-and-white C. biologist D. bike A. crayon B. damage C. nothing D. dream A. leftover B. ruler C. wait D. patriotism A. hiking B. puma C. reunion D. his A. car B. result in C. controversy D. seriously A. profession B. bag C. encouragement D. sleeping