—What ______ the taxi drivers in Beijing to take up the study of English?—The successful bid for the 2008 Olympic Games.
Determination is a kind of basic quality and this is ________ it takes to do jobs well.
The difficulty we now meet with is ________ we can persuade him to tell the truth.
Then Mr Smith told me ________ he was doing was very important.
Would you mind telling me _______ language your friend speaks?
When I try to understand ________ that prevents children from getting fat, it seems to me that there are two reasons.