A. parents B. Chicago C. shuttle D. moreover A. robot-arm B. world-famous C. abruptly D. knock on the door A. fireman B. great-grandpa C. Hubble D. recommend A. art form B. reputable C. proceed D. wedding A. billion B. channel C. rainy D. dignity A. meeting place B. vet C. yours sincerely D. smoke A. atmosphere B. cobra C. personnel D. anxiously A. linguistics B. faulty C. movie D. house A. root B. sensational C. peach D. regiment A. shawl B. galaxy C. normal D. sensation