A. black-and-white B. Africa C. lost and found box D. shall A. go through B. change one's mind C. salaam D. museum A. recognize B. robot C. NASA D. watermelon A. on foot B. walk C. hamster D. teacup A. in detail B. designer C. buy D. morality A. least B. enough C. sit down D. upset A. push in B. English C. terrifying D. let's A. about B. verbal C. biogas D. wonderland A. allow B. elevator C. by bike D. music class A. someday B. the Arctic C. free D. spasm