Nowadavs,most people,in order to keep fit,prefer walking to driving _________necessary.
Her________to become a teacher was held back by her poor spoken English.
It is ________to believe that the number 13 brings bad luck.
It was when Mozart was just a little boy that his ______ for music became obvious.
Tom thought it was an honor ___________ to speak in the ceremony.
He ________ the things in the old case which he wanted to keep.