问题描述：
A little boy fell into the river and r___there for two minutes,then he was saved by a policeman
Paper making was one of the Four Great Inventions in a____ China
My father sprinkled lots of salt on the pizza ,so it was s____
The abacus was invented in the sixth c_____ by Chinese people
Aunt Wang was making a birthday cake for her son,it p____a pleasant smell
Paper making was one of the Four Great Inventions in a____ China
My father sprinkled lots of salt on the pizza ,so it was s____
The abacus was invented in the sixth c_____ by Chinese people
Aunt Wang was making a birthday cake for her son,it p____a pleasant smell
问题解答：
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