___________ seems hard to believe is that the bird the officer uses is the same bird often seen in public parks—-the pigeons.

Saving Private Ryan is an unforgettable anti-war film and also a story of courage and _________ .

(2014·福建名校质量检查)The United Nations is trying to free the world________the threat of war

er I met her，________ was fairly often, she greeted me with a sweet smile.

Have you noticed the problem ________ he is now in low spirits? ________ come? [ ]