Do you remember the place ________ we visited last year?
We don’t permit _______in the classroom; that is to say, students aren’t permitted ________in the classroom.
It was on October 3, 2011 _____ a big fire happened in Beijing, _____ was a great shock to lots of people.
When he entered the hall, he found the big desk ______with flowers and many people ______at him kindly.
Is this the reason _______she explained in the report for her success in the job?
The heavy fog in London made ______deep impression on us, which was sometimes so heavy that we lost _______sight of everything around us.