It’s said that this kind of plant only gives off this strange perfume on ________ conditions which the scientists are trying to figure out now.

I left university with a good degree in English Literature, but no _________ of what I wanted to do.

 Everything on the news ________ a whole new meaning when you have a personal connection with the people.

— How are you, my dear?— Not so well． I've ___ the flu．

After the earthquake, very little        of the city of Tangshan.