They ________ for Shanghai on Friday．Shall we go to see them off at the train station?

1. A.
   left
2. B.
   were leaving
3. C.
   have left
4. D.
   are leaving

They          for Shanghai on Friday．Shall we go to see them off at the station?

A．are leaving                                                 B．are left

C．have left                                                    D．left

－They ________ Shanghai on Friday. Shall we go to ________ at the train station?

－As you said, that's a good idea.

[　　]

A．are leaving to, see them off

B．are leaving to, see off them

C．are leaving for, see them off

D．are leaving for, see off them