21.The doctors _______ the medicines to the people in the flood area. A. distributed B.packed C.prayed D.undertook 22.Much of the news provided by this newspaper is _______, not foreign. A. domestic B.strain C.purchase D.murder 23.He tried to _______relations with his former wife but he failed. A. measure B.maintain C.shelter D.reply 24.He _______ to study harder in the future so that he could have more opportunities to find a better job. A. resolved B.resorted C.requested D.reserved 25.The _______ work continued for more than a week but there was still no sign of the missing boy. A. research B.rescue C.vessel D.vast 26.Many kinds of animals are believed to have _________ from the earth A. withdrawn B.vanished C.found D.hung 27.The engineers in this lab spent several weeks _______ their plans for the new bicycle. A. counting B.stripping C.elaborating D.casting 28.Pine trees are usually believed to _______ cold weather. A. guard B.accomplish C.roar D.endure 29.Free medical service is _______ to nearly all the college students in China. A. favorite B.available C.convenient D.average 30.After working for twenty hours without any rest, the doctors were _______. A. exhausted B.mounted C.wrapped D.restored
