A. inventor B. deadline C. Shanghai Museum D. invitation A. clatter B. swift C. wing D. asleep A. tentative B. cheeseburger C. remember D. statement A. vegetarian B. scholar C. ascertain D. heat up A. then B. knife C. in one's way D. pest A. balloon B. hitchhike C. right away D. determination A. step B. a C. express D. cross A. role model B. purpose C. ply D. lady A. carelessly B. doorway C. help yourself D. in charge A. content B. serve C. authority D. behaviour