There is no _____ that the Chinese people will present to the world a successful, splendid and unforgettable exposition(博览会).
Since then, finding ways to grow more peanuts ______ his life goal.
______ with new scientific farming methods, they have been able to use less farmland thanin the past.
Only after I read the book _______ why she devoted all her life to medical work forChinese women and children.
It is ______ to improve the working conditions for the construction workers.
Nobody but me ______ that either you or Tom ______to take part in this activity.