A. laptop B. system C. by school bus D. ingredient A. helicopter B. tourism C. website D. vibration A. wash clothes B. sort out C. behaviour D. interested A. instruction B. port C. keep in touch D. be angry with A. accompaniment B. embarrassing C. publishing house D. Houston Rockets A. erect B. get hold of C. impress D. ecology A. description B. contribute C. hotline D. explorer A. footprint B. eighth C. disappear D. destination A. share with B. pan C. due D. disappointed A. vary from to B. May Day C. for the first time D. brilliant