. Probability is the mathematical study of the _____ of an event's occurrence.
We are glad to hear that the Greens __________ to a new flat next week.
After a while, she stopped reading and __________ to giving us a lecture.
As we all know, many Chinese words have come into English,__________ typhoon, tofu and kung fu.
Let us suppose that you are in __________ position of __________ parent. Would you allow your child to do such a thing?
-How could you __________ my sister so easily in the crowd? -Because she stood out in her red dress.