将所给单词连成完整的句子.
问题描述：
将所给单词连成完整的句子.
how
the
needed
finish
wrote
many
Tom
to
running
he
seconds
100m
down
标点：.
注：单词不得重复
标点已给出（也就是说如果是句号就是陈述句等,问号就是疑问句等）
答
Tom wrote down how many seconds he needed to finish running the 100m.