He likes books ________ science because he wonders what and why our world is.
—How beautiful the dress looks __________ you! Don't you want __________, Madam?—Please show me __________.
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.