302. The two countries once into one, it will become a strong and powerful one in the world.
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.