用when把下列部分组成句子,注意时态,人称主语可用we或I(when),walk down starirs quickly,hear the fire alarm

问题描述:

用when把下列部分组成句子,注意时态,人称主语可用we或I
(when),walk down starirs quickly,hear the fire alarm

When I heard the fire alarm, I walked down starirs quickly
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