We are lucky to be among the generation of people who have ________ and experienced the great social changes in our country.
We all know that a good sleeping bag is a necessary part of every camper's __________.
His work was __________ by his boss.
The population of this city, forty percent of which __________, __________ 15% in the last three years.
A good teacher should encourage his students to __________ the knowledge by themselves instead of just copying and memorizing what the teacher said in class.
—Could I ask you a rather personal question? —Sure, __________.