---- When did you last hear Jay?---- He phoned me this morning, and we agreed a time and place to meet. (2008 .湖南)
The question is not easy _____.
The classroom ______ 30 feet long.
As middle school students, we _____ the police to keep order.
The teacher said he needed _____ boys besides his students _____ the classroom.
If you keep on, you’ll succeed _______.