He is, however, one of those restless people who never ___ content with their present environment.
A new museum is being built in our city and it’ll be accessible to the citizens when___ next year.
Robert failed to complete his education____ he found it hard to focus on his studies.
We live in a society_____ there is a great deal of debate about competition.
--- What have you learned from your experience in Japan? --- Well, meeting people from another culture ___ be very difficult.
According to the survey, modern industry_____ quickly in developing countries in the past half century.