The passage tells us that a piggy bank is no use.
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The bird was ______.
A. thirsty
B. hungry
C. tired
It is not so easy to take the money out of a piggy bank as to put the money in.
A. 真
B. False
Donald got a high grade in math because ______.
A. he was good at math
B. the questions were easy
C. he copied from another boy
The bird put some ______ into the bottle.
A. idea
B. water
C. pebbles
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