急救，几道简单的同义句

1.What were you doing when the crime happened?
What were you doing _______ ______ _____ _________ the _______.
2.Then he ran out of the train quickly and carried the boy to a safe place.
Then he ___ out of the train and carried the boy __________ ______.
3.The person is guilty.
The man has done ___________ ____________ ___________ __________.
4.He saw a woman with blood on her skirt just now.
He saw a woman ________ ___________blood _______ her skirt just now.
(麻烦解释一下！）

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