A library with five thousand books _______ to the nation as a gift.
Leave your key with your neighbor ________ you lock yourself out one day.
You have to move out of the way ________ the truck cannot get past you.
One's life has value________ one brings value to the life of others.
(2013·辽宁卷)One can always manage to do more things,no matter full one’s schedule is in life.
He is so busy. He cannot afford enough time with his son _______ he wants to.