Dear Tom,
I'm writing to tell you that an earthquake drill was held in our school yesterday.After we had tow classes,our teachergave us some instruction on what to do during the drill.
when the alarm rang,all of us students hid ourselves in safer places.As soon as the teacher and ran downstairs one by one.We finally got together at the playground.
Through the dill,we have learned how to escape in an emergency.I think it is important for us to remain calm and know what to do.