One hundred percent _______ to your studies, though it can be lonely and no fun at all, will leave precious marks on your youth.
Nancy invited Tom and Ann to dinner, but _____ of them came.
I ordered ______book some days ago. ______ book has arrived.
This is not a match. We are playing chess just for _______.
My father began to work ______ a bus driver when he was 20 years old.
It was Jane_____ I saw in the library this morning.