A report says that many people in Africa have _______ the Ebola virus so far and new medicine _______ it is being developed.

I am sure David will be able to find the library – he has a pretty good ____ of direction.

Jenny is not coming for the party tonight. —But she .

Have you ever been to Shanghai —Yes. I _________ there with my father last year.

He was very rude to the Customs officer, _____ of course made things even worse.