— Why are you so popular with your students?— As a teacher, I seldom give my students so difficult a problem ____ they cannot work out.
Now that she is out of a job, Lucy _____ going back to school, but she hasn’t decided yet.
The British are not so familiar with different cultures and other ways of doing things, _____ is often the case in other countries.
The factory near the seaside was closed down as a(n) _______ of the terribly bad management and fund shortage.
The shoes are _____and are worth _____.
Jack couldn’t remember the exact date of the earthquake, but he knew it was ______ Saturday because everybody was at ______ church.