A. and B. homestay C. at once D. road A. senior high school B. princess C. laughter D. accident A. she's B. boring C. twenty-one D. park A. artwork B. dig C. far from D. forty-six A. draft B. check out C. cost D. Don't worry A. happen to B. except C. toll D. warmly A. bead B. on behalf of C. premium D. book A. abandoned B. manufacturer C. voice D. outside A. close B. robot-arm C. return D. history A. all the time B. vibration C. paratrooper D. in the morning