As a scientist, Madam Curie devoted herself ________ to her research and that was why she was given two Nobel Prizes.

–Is Lily your good friend–_________ We are only nodding acquaintances

We are not sure if it ___________tomorrow. If it _________, we won’t go hiking.

It was foolish of you to take a taxi ______you could walk there in five minutes

ziness ________ his failure; that is to say, his failure _______ his laziness.