A. ascertain B. truck C. comfortable D. astronaut A. role B. power cut C. fore fathers D. pay attention to A. fast asleep B. research C. recur D. have difficulty doing A. possible B. sailing C. go away D. divide A. tweet B. towel C. play D. natural A. sky B. through C. deaf D. repetitive A. alone B. affect C. impolite D. week A. have lunch B. dispose C. a lot D. together A. so much for B. drinking C. letter D. slam A. climate B. aside C. wax D. allegation