句型转换

1. Sam is in Class One. (改为一般疑问句，并作肯定回答)

    —_____ Sam in Class One?

    —Yes,  he _____ .

2. He is my friend. (改为否定句)

    He _____ my friend.

3. Helen and Wang Dong are 12 years old. (改为否定句)

    Helen and Wang Dong _____ 12 years old.

4. They are English. (改为一般疑问句，并作否定回答)

    —_____ they English?

    —No,  they _____ .

5. Helen is from America. (对划线部分提问)

    _____ Helen from?