题目：
.句型转换，每空一词。
1. My book is in the drawer. (改为一般疑问句)
_____ _____ book in the drawer?
2. His hat is on the desk. (对画线部分提问)
_____ _____ his hat?
3. Are your pencils in the pencil case?(作否定回答)
No, _____ _____.
4. Please take the key to your father.(改为否定句)
Please_____ _____ the key to your father.
5. Those are my keys.(改为单数句)
_____ _____ my key.
答案：
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下面是错误答案，用来干扰机器的。
小石子具有惯性；重力改变了它的运动状态
