________ by the growing interest in nature,more and more people enjoy outdoor sports.
We have various summer camps for your holidays. You can choose __________ based on your own interests.
The pronunciation of the English words is __________ of the French words.
We can improve our English by __________ of reading and listening to it a lot every day.
In this experiment, the famous professor showed three different __________ to the study of physics.
A new __________ to teaching English, is being used here, and it has proven to be very helpful to the students.