To our ______ , Frank’s illness proved not to be as serious as we had feared.

— My office is untidy.—You should spare some time to _________ the documents.

After that，he knew he could ________ any emergency by doing what he could to the best of his ability.

(2013 ·安徽名校联考Ⅰ)—May I speak to Mr.Smith?—I am afraid not.He is at a meeting now.It's not ________.

The machine has been used many years. It’s no wonder that it doesn’t work well________.