A. aren't B. three C. uncomfortably D. convulsive A. anyway B. agency C. one D. after class A. billion B. nine C. sentence D. conceive A. two B. welcome back to C. behavior D. necklace A. insignificant B. role C. eleven D. keep in touch A. rambling B. flight attendant C. section D. eight A. lifeboat B. happen to C. ten D. lover A. twelve B. disability C. gently D. anniversary A. headmistress B. trivial C. four D. comprehend A. five B. bus C. endless D. thermodynamics