______ mmorning．

into the accident, the policeconcluded that both of the drivers were responsible for it．

Low-carbon lifestyle is of great benefit toimprove the world environment _____can be enjoyed from it until you have a deep understanding ofit，however

I had meant to meet you at the airport this morning, but I was too busy for I_______ a report

He wasted a lot of time playing football, otherwise he ________the exam.