He and his parents ________ teachers in the same middle school．

1. A.
   all are
2. B.
   are all
3. C.
   both are
4. D.
   are both

His parents ________ teachers.

1. A.
   both are
2. B.
   are both
3. C.
   both is
4. D.
   is both

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L. Ron Hubbard’s study technology for teenagers opens the door to their future success by giving them the ability to study and learn. Fully illustrated （插图）for easy comprehension.
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【小题1】According to the advertisements, the four books are all intended for ______.

根据汉语意思用英语完成句子，将答案写在横线上。
【小题1】他的父母和老师想让他改变态度。
　　His parents and teachers           him                     his attitude.    
【小题2】你曾经把你的钥匙锁在房间里过吗？
          you ever           your           in the room?
【小题3】老师相信同学们做了一个很好的决定。
The teacher believes the students have           a good          .
【小题4】努力学习是很重要的。