1 . While in the beginning some people may even enjoy abusing drugs, in the end drug users find themselves t________ in a prison from which they cannot escape.

2 . Team leaders must ensure that all members get over their natural desire to avoid the embarrassment a________ with making mistakes. （根据首字母单词拼写）

3 . ________(任命)as president of the university yesterday，he is giving a speech on the platform now. (根据汉语提示单词拼写）