1.Although I left home early,because of the traffic jam,the car was driven too slow; I ended up being late for school. 2.I can ensure that I would get up earlier from now on,so that I would not be late again.
1 Because of traffic jam on my way, although i started so early, i was late for the school. 2 I promise that i will start even earlier for not being late again.
1. I left home very early but the traffic jam crowded the road so that the car couldn't be driven very fast,which made me be late for school. 2. I promise from now on I will get up earlier in order not to be late again.