A. used to B. weak C. their D. moo A. structure B. alienate C. clothes D. go to a drawing club A. mood B. amazing C. house D. no longer A. visit one's grandparents B. objection C. rock climbing D. lately A. sit-up B. step C. exceptionally D. speculation A. porter B. pay C. play computer games D. thief A. porcupine B. best-seller C. evening D. reform A. shyly B. moral C. African D. always A. burrow B. on the weekend C. institution D. signature A. poor B. airmail C. survive D. positive