1. Is this a box? (改为复数句子)
    ___________________________________?
2. What's that? (用egg回答) 
    ___________________________________.
3. Steve is eleven. (对画线部分提问)
   ___________________________________?
4. Amy is in Class Two. (对画线部分提问) 
    ___________________________________?
5. Those are erasers. (改为一般疑问句，并作否定回答)
    ___________________________________? 
    ___________________________________.