1)these are the answers.make questions 1. members of european royal family 2. because travelling by air became cheaper 3. france, germany and britain 4. the top speed of tgv is 200, apt is 160, trans rapid is 250

1. Who were they? - Members of European Royal Family.
2. Why did they go by plane? - Because travelling by air became cheaper.
3. Where did they go to? -  France, Germany and Britain.
4. How fast are they? - The top speed of TGV is 200, APT is 160, Trans rapid is 250