Although ________ after the Civil War, the American blacks still took no important role in the white Americans except as servants and laborers.
Whether we’ll hold the sports meet depends on the weather, _____?
____ makes our school proud is _____ more than 80% of the students have been admitted to key universities.
I went to bed very late last night, _____, early the next morning.
Whenever I met him, _____ was fairly often, I like his sweet and hopeful smile.
She took the boy _____ the hand and led him _____ the zero.