5. There are twenty-six
letters in the post office.
( )
(4)
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: