After many years’ hard working, his parents managed to ________ the debts for his education at university.
Tomorrow being the last day, you should hand in your composition by emails to meet the ______.
My father bought me several books, but _____ was interesting.
He failed in the exam, ______ proves that he wasn’t working hard enough.
The girl got herself into a serious situation ______ she was likely to lose control over the bike.
The old lady, ______ had been killed in the war, was given help by the local government.