英语翻译A Difficult Questionfour girls went to school every day

英语翻译
A Difficult Question
four girls went to school every day by taxi .
one day one of the girls said,"there's a test this morning .let's get to school late
then we won't have to take the test ."
"what can we tell the teacher?" one of the girls said.he'll be angry .we'll need a good excuse moments ."
the girls though for several moments ,than one of them said ,"let's tell him that our taxi had a flat fire ."
"that's a good idea ,"the other girls said."we'll tell him that." they arrived at school an hour late .the test was finished .
"why are you late?"the teacher asked ."you missed the test."
"our taxi had a flat fire,"one of the girls said .
the teacher thought for a moment ,then he said ,"sit down ,one of you in each corner of the room ."
the four girls did this
than the teacher said ,"write on a piece of paper the answer to this question :which tire was flat?