Jack likes to make people _____ and play jokes _____ his friends.                                                            [ ]

A. laugh;on                                                        

B. to laugh;on                                                      

C. laugh;with                                                        

D. to laugh;with

随团出境的旅游者不得擅自分团、脱团，而随团入境的旅游者可以分团、脱团，以便他们自由旅游。