I was ashamed________wasting many hours when I should have been studying.
The professor said he wouldn’t attend the opening ceremony ____.
. —He hasn’t gone to the office up to now. —Well, he ____.
Mr. Black, ___ born in Kentucky, lived and practiced law in Missouri.
. All substances, ___ solids, liquids or gases, are made up of entirely atoms.
. The purpose of the research had a more important meaning for them than ____.