A. stomach ache B. domesticate C. go ahead D. passenger A. criticize B. carefully C. probably D. fast-food restaurant A. imagine B. grasp C. fade out D. packet A. care for B. flag C. authoritarian D. skateboard A. spaceship B. premium C. retired D. cattle A. breakthrough B. environment C. acid D. necessity A. just B. hatch C. energy D. candidate A. abrupt B. ancestor C. glasses D. born A. camel B. at that time C. presentation D. invasion A. month B. steam C. roar D. schoolbag