阅读下面短文，从方框内选择恰当的句子填入短文空白处，使短文内容完整、意思连贯。
Four girls were at the same school. They were good friends, so they often studied and played together.        
One day one of the girls said, “There is a test this morning. Let’s go 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.
    ”
The girls thought for several moments, then one of them said, “Let’s tell him that our taxi had a flat tire(爆胎).” “    ” the other girls said. “We’ll tell him that.”
   The test was finished.
“Why are you late?” the teacher asked. “You miss the test.” “Our taxi had a flat tire,” 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. Then the teacher said, “Write the answer to this question on a piece of paper:  ”

A. We’ll need a good excuse. B. Which tire was flat? C. That’s a good idea, D. They arrived at school an hour later. E. They went to school every day by taxi.