A. grandparents B. convenience C. holiday D. former A. helicopter B. success C. Forbidden City D. be A. bacteria B. birthplace C. arrive D. immigrate A. blueprint B. safety rule C. emperor D. African A. effortlessly B. regret C. studio D. sales reps A. pancake B. That's OK C. sit around D. in the meantime A. supplement B. fall away C. address D. roof A. map B. journalist C. curtsy D. Greek A. undertaking B. ask the way C. challenging D. poster A. sunken B. get in touch with C. e-friend D. period