Ted told his father he _____ his homework three hours before.

下列各句中，加点成语使用不恰当的一句是

Since you have made such good preparations,there _______ be any problem about passing the coming exam.

Jack _______ his friends _______ to a movie every week.

The boy who was believed _____ in the last exam was being questioned by the teacher when I entered his office. [ ]