[解析]
M:Sue.I haven't seen you for a while.Where have you been hiding?Have you practiced swimming or been busy with your designing?
W:Neither,Dave.I have some excellent news.I won first prize in the computer game competition.
M:That is really wonderful news.What is the prize?
W:I have won a trip to London.
M:WOW That's great.But how will you get there?
W:Train,of course.Although i've just won a trip,the plane is much too expensive.
M:Ai hate flying with just the thought of not having my feet safe on the ground.Three things happen.My stomach turns,
my face goes pale.and I break into a cold sweat.
W:But if you want to save time,you have to fly.
M:That's true.Sometimes I have no other choice.