Have you ever wondered why some of the smartest students in your class sometimes ____ failing exams?
I still remember__________this used to be a quiet village.
—I drove to Zhuhai for the air show last week. —Is that__________you had a few days off?
Sarah hopes to become a friend of__________shares her interests.
__________leaves the room last ought to turn off the lights.
The question has been raised at the meeting__________each member country should share the expenses of the committee.