Some students came to Xiushui No.1 Middle School this year, and left their parents, _____ to return home until he achieves his goal.
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.