It took me over two hours to ______ Robert to change his mind, because he was too stubborn.
All that can be eaten _______ eaten up.
I have bought two ballpens, _______ writes well.
John got beaten in the game, _______ had been expected.
Is _______ some German friends visited last week?
The clever boy made a hole in the wall, _______ he could see _____ was going on inside house.