根据下列句子及所给汉语提示,用单词的正确形式填空(每空一词)。
(1) He left the room without a(n) ___________ (解释).
(2). The little tramp, acted by Charlie Chaplin, became known ___________ (遍及) the world.
(3). We have very ___________ (令人信服的) evidence to show that he is the criminal.
(4). Jody Williams started many ___________ (运动) to stop the making of landmines.
(5). ___________ (不幸地), there’s nothing I can do about your problem.
(6). The police are keeping the thief under close ___________ (观察).
(7). Yuan Longping has been ___________ (努力,斗争) for Chinese farmers over the past decades.
(8). The old buildings in Changchun are well ___________ (保存).
(9). I can easily recognize your handwriting. It’s so ___________ (独一无二的).
(10). Tony and I, ___________ (代表) our class, greeted international students at the airport.