A. shocked B. T-shirt C. take pride in D. tetrahedron A. go back to B. lunar C. the Yangtze River D. mental A. French B. instead C. enter D. spaghetti A. country B. crayon C. strong D. flies A. by chance B. embarrassed C. cloud D. duchess A. airfield B. Thursday C. area D. unlucky A. limestone B. bus driver C. Rugby D. headache A. Breathtaking B. submarine C. upset D. used to A. on sale B. petrify C. spaceport D. part A. retrace B. water C. southern D. bark