They know they have tofind a warm place to live in f__the winter

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• They know they have tofind a warm place to live in f__the winter
• They know they have tofind a warm place to live in f__the winter
• 六年级缺词填空,首字母已给、英语D进、反正我是英语F、= =Many birds make a big trip each fall.When fall is here,they know winter (2)w_ill_ come soon.They know they have to find a warm place to live in (2)f______ the winter.They fly away to a sunny and warm place.Then,when winter is (3)o_____,the birds fly back home again.How do the birds know winter is on the (4)w____?In the fall,the sun is not bright and warm.Then the birds know they have to fly away to find a sunny and warm p
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