“I was driving carefully when my car hit the tree.” He told the police.
问题描述：
“I was driving carefully when my car hit the tree.” He told the police.
请将句子改为间接引语!
（He told the police that ）
He told the police that he had been driving carefully when his car hit the tree.为什么不是这个呢？
答
He told the police that he was driving carefully when his car hit the tree.