. Probability is the mathematical study of the _____ of an event’s occurrence.
So the man went France, _______ to give up the fortune that would one day come to him, _______ to live in England.
--- I didn’t tell my parents the secret yesterday. --- But you ______.
In 1911, Madam Curie received a second Nobel Prize for her research, the first person in the world ______ two Nobel Prizes.
--- The floor is dirty. Can anyone clean it?--- ______. I do it all the time.
In the face of ______ failure, it is the most important to keep up _____ good state of mind.