A $1000 ____will be offered to anyone who helps to return the lost jewel .
With nothing ______to burn, the fire became weak and finally died out.
To the great ______ of the young writer, his first book sells well after it was published in May.
The time she has devoted in the past decade ______ the disabled is now considered to be very valuable.
—Do you still remember the days ______ we spent in the countryside ten years ago?—Yes,I'll never forget the experience.
All the universities have duty to ______ their students ______ of the quick development of the scientific world.