The train for Shanghai _____ at 9 tomorrow morning. So you are _______ to get everything ready

at 7 o'clock.[ ]

A. will leave, supposed      

B. are leaving, suppose  

C. leaves, supposed    

D. is going to leave, suppose

       四大高原是                          、                         、                        、                     ，四大盆地           

            、                        、                        、                      ，三大平原                          、                   

          、                         。