求答案Thousands of years ago,people did not know 36 to make a fire．

题目

求答案Thousands of years ago,people did not know 36 to make a fire．
Thousands of years ago,people did not know     36     to make a fire．When it was very    37     at night,they could not sleep well．Sometimes lightning hit（打,击） a    38    and started a fire.At first people were both surprised and    39    to see the fire．They were afraid to go up．Later a few   40     men took some of this fire and made a fire near their homes．They used the fire to keep them warm and to cook food．When they had a fire,they did not let it    41     burning．If it stopped,they could not start it again．Maybe they had to    42   for a long time,sometimes for    43    ．Later they     44     how to make a fire with piece

答案

BADBB ACDCC
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