There is no _____ that the Chinese people will present to the world a successful, splendid  and unforgettable exposition（博览会）.

There’s no ________ from my bedroom window except for some factory chinmneys. 

It was such a ________to hear that her son was found safe and sound in the forest.

In order to learn the _______ of the family business, Bill took a job as messenger boy in one of the offices.

He is an old doctor with a lot of ________. But he has never travelled by air before.Taking a plane was quite ________ experience for him this time.