today i found time was a cruel thing.
　　whatever man is, time always goes on.it won‘t stay to wait for somebody. you can‘t use anything to exchange time. time is also a fair thing.
　　although you have a lot of money or you enjoy high reputation, time won‘t leave them more. today i found i hadn‘t enough time. although i have 50-day holiday, but i found i had a lot of things to do.
　　i had a lot of homework to do and i had something necessary to do.