One of the requirements for a fire is that the material ____ to its burning temperature.

— I can’t find my dictionary anywhere.— You _____ have lost it while studying in the library.

 If you ________ home without a word, your parents wouldn't be so worried now.

 We _________ the difficulty together, but why didn’t you tell me?

Jane’s pale face suggested that she_____ill, and her parents suggested that she________medical examination.