一 Why        ? I'm busy myself. Jack is lying on the grass doing something.

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（A）

A: Can you tell me something about Egyptian pyramids?

B: Sure. There are many Egyptian pyramids in Egypt.

A:{#blank#}1{#/blank#}?

B:They were built around 2560 B.C.

A:{#blank#}2{#/blank#}?

B:The Great pyramid of Khufu. It is one of the "seven wonders"of the world. The ancient King Khufu ordered his men to build the Great Pyramid.

A: What was it made of?

B:{#blank#}3{#/blank#}.Each stone was fixed so well.

A:{#blank#}4{#/blank#}?

B: The biggest stone weighs as much as 15 tons.

A:{#blank#}5{#/blank#}? 

B: To this day, it is still a mystery.

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