put in the prepositions.                                                                                                          1. i like to fly ... plane .  it is so fast. 2. - did you by the tickets ... the railway stations? - no, i didn't. i bought them ... the airport. 3. the plane is flying ... the blue sky, ... the plains, ... the seas. 4. can i buy a ticket ... Moscow, please? 5. can you hear? somebody is crying ... help. 6. shall we go ... bus or shall we go ... foot?