Last year I caught the baby cuckoo and put【M11】______ it in a cage outside. Later its mother flew from the cage【M12】______ with

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问题     Last year I caught the baby cuckoo and put【M11】______
it in a cage outside. Later its mother flew from the cage【M12】______
with food in her mouth. I was happy to see this, because of【M13】______
the mother bird knew much better than I did to feed her【M14】______
baby. But the following morning I found the baby bird【M15】______
died. I told the story of my bird to my biology teacher【M16】______
and he explained that what had happened. A mother【M17】______
cuckoo, finds her baby in a cage, will bring it poison【M18】______
food. She believes it is good for her baby to die than to【M19】______
live in a cage. I still feel sorry for what I do to the bird. 【M20】______
【M20】

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答案do改为did

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