A. interplanetary B. at night C. polluted D. hoverboard A. salad B. compare C. overrun D. precious A. network B. birth C. had a cold D. substance A. city-state B. lasting C. bow D. Mars A. matter B. one by one C. distance D. enjoy sunbathing A. I'd like B. ninth C. actual D. crowded A. carry out B. made C. from to D. influence A. oxygen B. scenery C. coral D. wreck A. once again B. specially C. put on weight D. improve A. can't wait B. wave C. electronic D. plastic