The students are looking forward to having an opportunity ________ society for real-life experience.
The meal over, the manager went back to the meeting room to ______ their discussion.
Greatly moved by her words, __________.
The population of many Alaskan cities has ______ doubled in the past three years.
---In the past ten years, there have been many changes in family life. --- Are these changes ______?
His sister had become a teacher , ______ was what he wanted to be.