The _______ is just around the corner and you won't miss it.

The top leaders of the two countries are holding talks in a friendly _________. 

There has been a（n）____of sadness in the small town since a boy was drowned in the river．

“Why couldn’t they meet us at five o’clock?” “Because they were delayed by _________.”

This morning I saw an old friend of mine in the street by ______.