问题描述：
读句子,用“am”“is”或“are”填空.
A dog （）sleeping.
l()writing a letter.
Two lions()fighting.
He()drinking.
The rabbits()jumping.
The panda()climbing.
A dog （）sleeping.
l()writing a letter.
Two lions()fighting.
He()drinking.
The rabbits()jumping.
The panda()climbing.
问题解答：
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