2. The son doesn’t study English well.                 (    )
 3. The son can’t answer his father’s question.            (    )
 4. The father works in the post office.                 (    )
 5. There are twenty-six letters in the post office.         (    )
 
Tom, Sam, Jim and Jack
 Tom, Sam, Jim and Jack live in a building of four floors. They live on different floors. They have different jobs—an engineer, a worker, a teacher and a doctor. Tom lives above Sam, but blow Jim. Jack lives on the third floor. The doctor lives above the teacher, but below the worker. The engineer lives on the ground floor. What are their jobs? Which floor does each of them live on?
回答问题：
What does Sam do ?                                      
Which floor does Jim live on?                               
What does Jack do ?                                       
Which floor does Tom live on? 

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