按要求改写下列句子。  

1. He has seen the film, _____ _____ ? (完成反意疑问句)

2. There is little water in the cup, _____ _____ ? (完成反意疑问句)

3. They have some apples. (用Tom作主语改写句子)

    _____ _____ some apples.

4. The children like ice cream. ( 改为否定句)

    The children _____  _____ ice cream.

5. He doesn't have breakfast. (改为肯定句)

    He_____  breakfast.

人的本质存在于具体的人性之中，不能离开人的具体社会实践去抽象地说明人性。( )