I go to school by bus.
He didn't buy that one.
Tom will go to supermarket tomorrow.
I am playing the piano.
She has gone to Japan.
Before i went to the railway ,she had gone.
xiaoming was playing basketball at 8clock yesterday morning.
I wii be meeting this time tomorrow.
By th end of this month ,we will have finished 5 programs.
He is going to writing this afternoon.好乱。。。